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CVE-2008-1150 (GCVE-0-2008-1150)
Vulnerability from cvelistv5 – Published: 2008-03-27 17:00 – Updated: 2024-08-07 08:08- n/a
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GHSA-PR6F-QW3P-2X8Q
Vulnerability from github – Published: 2022-05-01 23:37 – Updated: 2022-05-01 23:37The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309.
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"modified": "2022-05-01T23:37:13Z",
"published": "2022-05-01T23:37:13Z",
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VAR-200803-0326
Vulnerability from variot - Updated: 2023-12-18 10:45The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309. A vulnerability in the way Cisco IOS handles IPv6 packets could result in a remotely exploitable denial of service. Cisco IOS is prone to multiple denial-of-service vulnerabilities that occur in the virtual private dial-up (VPDN) when the Point-to-Point Tunneling Protocol (PPTP) is enabled. Successfully exploiting these issues may cause a memory leak or prevent the establishment of VPDN connections, denying service to legitimate users. ----------------------------------------------------------------------
A new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI has been released. The new version includes many new and advanced features, which makes it even easier to stay patched.
3) Some errors exist in the Data-Link-Switching (DLSw) feature when processing UDP and IP protocol 91 packets.
4) An error exists in the processing of IPv6 packets, which can be exploited to prevent the interface from receiving additional traffic or to cause the device to crash (if RSVP service is configured on the interface) by sending a specially crafted IPv6 packet to the device.
Successful exploitation of this vulnerability requires that IPv6 and certain IPv4 UDP services are enabled.
5) An error exists in the implementation of Multicast Virtual Private Networks (MVPN), which can be exploited to create extra multicast states on the core routers via specially crafted Multicast Distribution Tree (MDT) Data Join messages. This can also be exploited to receive multicast traffic from VPNs that are not connected to the same Provider Edge (PE).
Successful exploitation of the multicast traffic leak requires that the attacker knows or guesses the Border Gateway Protocol (BGP) peering IP address of a remote PE router and the address of the multicast group that is used in other MPLS VPNs.
SOLUTION: Update to the fixed version (please see the vendor's advisories for details). 5) The vendor credits Thomas Morin.
ORIGINAL ADVISORY: Cisco: http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml http://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml http://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml
OTHER REFERENCES: US-CERT VU#936177: http://www.kb.cert.org/vuls/id/936177
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
Please Note: Secunia recommends that you verify all advisories you receive by clicking the link. Secunia NEVER sends attached files with advisories. Secunia does not advise people to install third party patches, only use those supplied by the vendor. Attackers could exploit these vulnerabilities to access sensitive information or cause a denial of service.
I. Further details are available in the US-CERT Vulnerability Notes Database.
II.
III.
IV. Please send email to cert@cert.org with "TA08-087B Feedback VU#936177" in the subject.
For instructions on subscribing to or unsubscribing from this mailing list, visit http://www.us-cert.gov/cas/signup.html.
Produced 2008 by US-CERT, a government organization. PPTP is only one of the supported tunneling protocols used to tunnel PPP frames within the VPDN solution.
The first vulnerability is a memory leak that occurs as a result of PPTP session termination. The second vulnerability may consume all interface descriptor blocks on the affected device because those devices will not reuse virtual access interfaces. If these vulnerabilities are repeatedly exploited, the memory and/or interface resources of the attacked device may be depleted.
Cisco has made free software available to address these vulnerabilities for affected customers.
There are no workarounds available to mitigate the effects of these vulnerabilities.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml
Note: The March 26, 2008 publication includes five security advisories. The advisories all address vulnerabilities in Cisco's Internetwork Operating System (IOS) software. Each advisory lists the releases that correct the vulnerability described in the advisory, and also lists the releases that correct the vulnerabilities in the other five advisories. Please reference the following software table to find a release that fixes all published software advisories as of March 26th, 2008:
- March 26th Bundled IOS Advisory Table http://www.cisco.com/warp/public/707/cisco-sa-20080326-bundle.shtml
Individual publication links are listed below:
-
Cisco IOS Virtual Private Dial-up Network Denial of Service Vulnerability http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml
-
Multiple DLSw Denial of Service Vulnerabilities in Cisco IOS http://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml
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Cisco IOS User Datagram Protocol Delivery Issue For IPv4/IPv6 Dual-stack Routers http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml
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Vulnerability in Cisco IOS with OSPF, MPLS VPN, and Supervisor 32, Supervisor 720, or Route Switch Processor 720 http://www.cisco.com/warp/public/707/cisco-sa-20080326-queue.shtml
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Cisco IOS Multicast Virtual Private Network (MVPN) Data Leak http://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml
Affected Products
Devices that are running certain Cisco IOS versions prior to 12.3 with VPDN enabled may be affected by these vulnerabilities.
Vulnerable Products +------------------
Devices that are running affected versions of Cisco IOS with VPDN enabled and are configured to accept termination of PPTP sessions are vulnerable.
To determine whether VPDN is enabled on your device, log in to the device and issue the command-line interface (CLI) command "show running-config". If the output contains "vpdn enable" along with a "vpdn-group " command, VPDN is enabled on the device. The device will accept termination of PPTP sessions if the command "protocol any" or "protocol pptp" is defined under the "vpdn-group " command. The following example shows a device that is running VPDN and will accept termination of PPTP sessions:
Router#show running-config
Building configuration...
!
!--- Output truncated.
!
vpdn enable
!
vpdn-group test_only
! Default PPTP VPDN group
accept-dialin
protocol pptp
virtual-template 1
!
!---Remaining output truncated.
To determine the software version running on a Cisco product, log in to the device and issue the "show version" command to display the system banner. Cisco IOS software will identify itself as "Internetwork Operating System Software" or simply "IOS." On the next line of output, the image name will be displayed between parentheses, followed by "Version" and the IOS release name. Other Cisco devices will not have the "show version" command or will give different output.
The following example identifies a Cisco product that is running Cisco IOS release 12.2(7):
Cisco Internetwork Operating System Software
IOS (tm) 7200 Software (C7200-IS-M), Version 12.2(7), RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Tue 15-Jan-02 18:31 by pwade
Image text-base: 0x600089C0, data-base: 0x613A6000
Additional information about Cisco IOS release naming can be found at http://www.cisco.com/warp/public/620/1.html.
Products Confirmed Not Vulnerable +--------------------------------
Devices that are running Cisco IOS versions 12.3 and later are not affected by these vulnerabilities. Devices that are explicitly configured for VPDN protocols other than PPTP are not affected.
Devices that are running Cisco IOS versions prior to 12.3 and do not have VPDN enabled are not affected by these vulnerabilities.
Cisco IOS XR is not affected by these vulnerabilities.
Details
VPDNs securely carry private data over a public network, allowing remote users to access a private network over a shared infrastructure such as the Internet. VPDNs maintain the same security and management policies as a private network, while providing a cost-effective method for point-to-point connections between remote users and a central network.
PPTP is a network protocol that enables the secure transfer of data from a remote client to a private enterprise server by creating a VPDN across TCP/IP-based data networks. PPTP supports on-demand, multiprotocol, virtual private networking over public networks, such as the Internet.
Details regarding the two known vulnerabilities in Cisco IOS devices that are running affected versions of system software follow:
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Memory Leak due to PPTP Session Termination
Upon completion of a PPTP session, memory is leaked from the processor memory on the terminating device. This is shown in the output of "show process memory" under the Dead process. The Dead process is not a real process. Its function is to account for the memory that is allocated under the context of another process which has terminated, in this case PPTP. When the administrator is logged into the device, if the device is under exploitation, the Holding entry of the Dead process under the "show process memory" command will be increasing. Following is an example showing a device that is holding Dead memory:
Router#show process memory Total: 199718560, Used: 11147828, Free: 188570732 PID TTY Allocated Freed Holding Getbufs Retbufs Process 0 0 99812 1848 8415816 0 0 *Init* 0 0 444 778840 444 0 0 *Sched* 0 0 17481700 4930848 819672 180908 0 *Dead* 1 0 284 284 3828 0 0 Load Meter !--- Output truncated.The CLI command "show memory dead" allows administrators to examine the contents of Dead. The output will display many occurrences of PPTP in the output if the PPTP process is causing the leak. The following example shows the dead memory for a device that has been exploited by the vulnerability
Router#show memory dead Head Total(b) Used(b) Free(b) Lowest(b) Largest(b) Processor 6225FF40 224002240 11906736 212095504 212082872 212084464 I/O 20000000 33554440 994136 32560304 32560304 32560252 I/O-2 F800000 8388616 1020632 7367984 7367984 7367932 Processor memory Address Bytes Prev Next Ref PrevF NextF Alloc PC what 62275DC8 0000000048 62275D68 62275E24 001 ------- ------- 60654230 PPTP create idb 62275E24 0000000052 62275DC8 62275E84 001 ------- ------- 60654230 PPTP create idb 62275E84 0000000052 62275E24 62275EE4 001 ------- ------- 60654230 PPTP create idb .... !--- remaining output truncated.This vulnerability is documented in Cisco bug ID CSCsj58566 and Common Vulnerabilities and Exposures (CVE) identifier CVE-2008-1151 has been assigned to this vulnerability.
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Virtual Access Interfaces Are Not Re-used
Upon completion of a PPTP session, affected devices do not remove the virtual access interface that is associated with the PPTP session and do not reuse the interfaces in any future connections.
This situation can result in an exhaustion of the interface descriptor block (IDB) limit, which will prevent any new interfaces being created within Cisco IOS, effectively blocking all new VPDN connections, even though the router may still have enough processor memory to remain up and running. A reload of the device is required to remove the interfaces.
An IDB is a Cisco IOS internal data structure that contains information such as the IP address, interface state, and packet statistics. Cisco IOS software maintains one IDB for each interface present on a platform and one IDB for each subinterface.
Further documentation on Cisco IOS IDBs can be found at: http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_tech_note09186a0080094322.shtml This vulnerability is documented in Cisco bug ID CSCdv59309 and Common Vulnerabilities and Exposures (CVE) identifier CVE-2008-1150 has been assigned to this vulnerability.
Vulnerability Scoring Details
Cisco is providing scores for the vulnerabilities in this advisory based on the Common Vulnerability Scoring System (CVSS). The CVSS scoring in this Security Advisory is done in accordance with CVSS version 2.0.
Cisco will provide a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.
CVSS is a standards based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.
Cisco has provided an FAQ to answer additional questions regarding CVSS at http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html
Cisco has also provided a CVSS calculator to help compute the environmental impact for individual networks at http://intellishield.cisco.com/security/alertmanager/cvss
CSCsj58566 - Memory Leak due to PPTP Session Termination
CVSS Base Score - 7.1
Access Vector: Network Access Complexity: Medium Authentication: None
Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
CVSS Temporal Score - 5.9
Exploitability: Functional Remediation Level: Official-Fix Report Confidence: Confirmed
CSCdv59309 - Virtual Access Interfaces Are Not Re-used
CVSS Base Score - 4.3
Access Vector: Network Access Complexity: Medium Authentication: None
Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
CVSS Temporal Score - 3.6
Exploitability: Functional Remediation Level: Official-Fix Report Confidence: Confirmed
Impact
Successful exploitation of the vulnerability may result in a memory leak of processor memory or consumption of all available IDBs on the device. With continued exploitation, the device will deplete its processor memory or reach an IDB limit. Both impacts would result in a denial of service condition for the device.
Software Versions and Fixes
When considering software upgrades, also consult http://www.cisco.com/go/psirt and any subsequent advisories to determine exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the devices to be upgraded contain sufficient memory and that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, contact the Cisco Technical Assistance Center ("TAC") or your contracted maintenance provider for assistance.
Each row of the Cisco IOS software table (below) names a Cisco IOS release train. If a given release train is vulnerable, then the earliest possible releases that contain the fix (along with the anticipated date of availability for each, if applicable) are listed in the "First Fixed Release" column of the table. The "Recommended Release" column indicates the releases which have fixes for all the published vulnerabilities at the time of this Advisory. A device running a release in the given train that is earlier than the release in a specific column (less than the First Fixed Release) is known to be vulnerable. Cisco recommends upgrading to a release equal to or later than the release in the "Recommended Releases" column of the table.
+----------------------------------------+ | Major | Availability of Repaired | | Release | Releases | |------------+---------------------------| | Affected | First Fixed | Recommended | | 12.0-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | 12.0 | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0DA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0DB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0DC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0S | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SP | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0ST | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0SZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0T | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0W | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0WC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0WT | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XD | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.0(7)XE2 | | | | are | | | 12.0XE | vulnerable, | | | | release | | | | 12.0(7)XE2 | | | | and later | | | | are not | | | | vulnerable; | | |------------+-------------+-------------| | 12.0XF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XH | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XI | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XJ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XK | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XM | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XN | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XQ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XR | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XS | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XV | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.0XW | Not | | | | Vulnerable | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.1-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | 12.1 | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1AA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1AX | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.1(22)AY1 | | | | are | | | 12.1AY | vulnerable, | 12.1(22) | | | release | EA11 | | | 12.1(22)AY1 | | | | and later | | | | are not | | | | vulnerable; | | |------------+-------------+-------------| | 12.1AZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1CX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1DA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1DB | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1DC | first fixed | 12.4(18a) | | | in 12.2B | | |------------+-------------+-------------| | 12.1E | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.1(11)EA1 | | | | are | | | 12.1EA | vulnerable, | 12.1(22) | | | release | EA11 | | | 12.1(11)EA1 | | | | and later | | | | are not | | | | vulnerable; | | |------------+-------------+-------------| | 12.1EB | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1EC | first fixed | 12.3(23)BC1 | | | in 12.2BC | | |------------+-------------+-------------| | 12.1EO | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1EU | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1EV | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1EW | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1EX | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | 12.1EY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1EZ | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | 12.1GA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1GB | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1T | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | 12.1XA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XH | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XI | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XJ | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.1XK | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XL | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XM | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.1XN | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XO | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XP | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XQ | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XR | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XS | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XT | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.1XU | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XV | first fixed | 12.3(26) | | | in 12.2XB | | |------------+-------------+-------------| | 12.1XW | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1XX | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1XY | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | 12.1XZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YA | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YB | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YC | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YD | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.1(5)YE6 | | | | are | | | | vulnerable, | | | 12.1YE | release | 12.3(26) | | | 12.1(5)YE6 | | | | and later | | | | are not | | | | vulnerable; | | | | first fixed | | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YF | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.1YG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.1YH | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.1YI | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.1YJ | Not | | | | Vulnerable | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.2-Based | Release | Release | | Releases | | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2 | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | 12.2B | 12.2(4)B5 | 12.4(18a) | |------------+-------------+-------------| | | 12.2(15) | | | | BC1e | | | | | | | 12.2BC | 12.2(15) | 12.3(23)BC1 | | | BC2d | | | | | | | | 12.2(8)BC1 | | |------------+-------------+-------------| | | 12.2(4)BW1 | | | 12.2BW | | 12.3(26) | | | 12.2(4)BW1a | | |------------+-------------+-------------| | 12.2BY | 12.2(8)BY | 12.4(18a) | |------------+-------------+-------------| | 12.2BZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2CX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2CY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2CZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2DA | Vulnerable; | | | | contact TAC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2DD | first fixed | 12.4(18a) | | | in 12.2B | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2DX | first fixed | 12.4(18a) | | | in 12.2B | | |------------+-------------+-------------| | 12.2EU | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2EW | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2EWA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2EX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2EY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2EZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2FX | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2FY | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2FZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2IXE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2JA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2JK | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2MB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2MC | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.2(18)S | | | | are | | | | vulnerable, | | | | release | | | 12.2S | 12.2(18)S | 12.2(25)S15 | | | and later | | | | are not | | | | vulnerable; | | | | migrate to | | | | any release | | | | in 12.2SRC | | |------------+-------------+-------------| | 12.2SB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SBC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SCA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SED | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SEG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SGA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SM | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SO | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SRA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SRB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SRC | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SU | migrate to | 12.4(18a) | | | any release | | | | in 12.3T | | |------------+-------------+-------------| | 12.2SV | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SVA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SVC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SVD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SW | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Releases | | | | prior to | | | | 12.2(17a)SX | | | | are | | | | vulnerable, | | | | release | 12.2(18) | | 12.2SX | 12.2(17a)SX | SXF13 | | | and later | | | | are not | | | | vulnerable; | | | | migrate to | | | | any release | | | | in 12.2SXF | | |------------+-------------+-------------| | 12.2SXA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SXB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SXD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SXE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SXF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2SXH | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2SY | migrate to | 12.2(18) | | | any release | SXF13 | | | in 12.2SXB | | |------------+-------------+-------------| | | | 12.2(25)S15 | | | Vulnerable; | | | 12.2SZ | migrate to | 12.2(28) | | | any release | SB12 | | | in 12.2SRC | | | | | 12.2(33)SRC | |------------+-------------+-------------| | | 12.2(15)T4e | | | 12.2T | | 12.3(26) | | | 12.2(8)T | | |------------+-------------+-------------| | 12.2TPC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2UZ | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XA | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.2XB | 12.2(2)XB5 | 12.3(26) | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XC | migrate to | 12.4(18a) | | | any release | | | | in 12.3T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XD | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XE | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XF | first fixed | 12.3(23)BC1 | | | in 12.2BC | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XG | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XH | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XI | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XJ | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XK | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.2XL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2XM | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2XN | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2XO | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XQ | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.2XR | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XS | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XT | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XU | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2XV | migrate to | 12.3(26) | | | any release | | | | in 12.3 | | |------------+-------------+-------------| | 12.2XW | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YA | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YB | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YC | first fixed | 12.3(26) | | | in 12.2T | | |------------+-------------+-------------| | 12.2YD | Not | | | | Vulnerable | | |------------+-------------+-------------| | | | 12.2(25)S15 | | | Vulnerable; | | | 12.2YE | migrate to | 12.2(28) | | | any release | SB12 | | | in 12.2SRC | | | | | 12.2(33)SRC | |------------+-------------+-------------| | 12.2YF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YH | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YJ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YK | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YM | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YN | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YO | migrate to | 12.2(18) | | | any release | SXF13 | | | in 12.2SXB | | |------------+-------------+-------------| | 12.2YP | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YQ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YR | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YS | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YT | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YU | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YV | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2YW | Not | | | | Vulnerable | | |------------+-------------+-------------| | | Vulnerable; | | | 12.2YX | migrate to | 12.4(18a) | | | any release | | | | in 12.3T | | |------------+-------------+-------------| | 12.2YY | Not | | | | Vulnerable | | |------------+-------------+-------------| | | | 12.2(25)S15 | | | Vulnerable; | | | 12.2YZ | migrate to | 12.2(28) | | | any release | SB12 | | | in 12.2SRC | | | | | 12.2(33)SRC | |------------+-------------+-------------| | | Vulnerable; | | | 12.2ZA | migrate to | 12.2(18) | | | any release | SXF13 | | | in 12.2SXB | | |------------+-------------+-------------| | 12.2ZB | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZC | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZD | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZE | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZF | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZG | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZH | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZJ | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZL | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZP | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZU | Not | | | | Vulnerable | | |------------+-------------+-------------| | 12.2ZY | Not | | | | Vulnerable | | |------------+-------------+-------------| | Affected | First Fixed | Recommended | | 12.3-Based | Release | Release | | Releases | | | |----------------------------------------| | There are no affected 12.3 based | | releases | |----------------------------------------| | Affected | First Fixed | Recommended | | 12.4-Based | Release | Release | | Releases | | | |----------------------------------------| | There are no affected 12.4 based | | releases | +----------------------------------------+
Workarounds
There are no workarounds for this vulnerability. Cisco recommends upgrading to the fixed version of Cisco IOS.
Obtaining Fixed Software
Cisco will make free software available to address this vulnerability for affected customers. This advisory will be updated as fixed software becomes available. Prior to deploying software, customers should consult their maintenance provider or check the software for feature set compatibility and known issues specific to their environment.
Customers may only install and expect support for the feature sets they have purchased. By installing, downloading, accessing or otherwise using such software upgrades, customers agree to be bound by the terms of Cisco's software license terms found at http://www.cisco.com/public/sw-license-agreement.html or as otherwise set forth at Cisco.com Downloads at http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt@cisco.com" or "security-alert@cisco.com" for software upgrades.
Customers with Service Contracts +-------------------------------
Customers with contracts should obtain upgraded software through their regular update channels. For most customers, this means that upgrades should be obtained through the Software Center on Cisco's worldwide website at http://www.cisco.com.
Customers using Third Party Support Organizations +------------------------------------------------
Customers whose Cisco products are provided or maintained through prior or existing agreement with third-party support organizations such as Cisco Partners, authorized resellers, or service providers should contact that support organization for guidance and assistance with the appropriate course of action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on specific customer situations such as product mix, network topology, traffic behavior, and organizational mission. Due to the variety of affected products and releases, customers should consult with their service provider or support organization to ensure any applied workaround or fix is the most appropriate for use in the intended network before it is deployed.
Customers without Service Contracts +----------------------------------
Customers who purchase direct from Cisco but who do not hold a Cisco service contract and customers who purchase through third-party vendors but are unsuccessful at obtaining fixed software through their point of sale should get their upgrades by contacting the Cisco Technical Assistance Center (TAC). TAC contacts are as follows.
- +1 800 553 2447 (toll free from within North America)
- +1 408 526 7209 (toll call from anywhere in the world)
- e-mail: tac@cisco.com
Have your product serial number available and give the URL of this notice as evidence of your entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for additional TAC contact information, including special localized telephone numbers and instructions and e-mail addresses for use in various languages.
Exploitation and Public Announcements
The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability described in this advisory.
We would like to thank Martin Kluge of Elxsi Security for reporting these vulnerabilities to us. We greatly appreciate the opportunity to work with researchers on security vulnerabilities, and welcome the opportunity to review and assist with security vulnerability reports against Cisco products.
Status of this Notice: FINAL
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A stand-alone copy or Paraphrase of the text of this document that omits the distribution URL in the following section is an uncontrolled copy, and may lack important information or contain factual errors.
Distribution
This advisory is posted on Cisco's worldwide website at :
http://www.cisco.com/warp/public/707/cisco-sa-20080206-pptp.shtml
In addition to worldwide web posting, a text version of this notice is clear-signed with the Cisco PSIRT PGP key and is posted to the following e-mail and Usenet news recipients.
- cust-security-announce@cisco.com
- first-teams@first.org
- bugtraq@securityfocus.com
- vulnwatch@vulnwatch.org
- cisco@spot.colorado.edu
- cisco-nsp@puck.nether.net
- full-disclosure@lists.grok.org.uk
- comp.dcom.sys.cisco@newsgate.cisco.com
Future updates of this advisory, if any, will be placed on Cisco's worldwide website, but may or may not be actively announced on mailing lists or newsgroups. Users concerned about this problem are encouraged to check the above URL for any updates.
Revision History
+---------------------------------------+ | Revision | | Initial | | 1.0 | 2008-March-26 | public | | | | release | +---------------------------------------+
Cisco Security Procedures
Complete information on reporting security vulnerabilities in Cisco products, obtaining assistance with security incidents, and registering to receive security information from Cisco, is available on Cisco's worldwide website at http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html This includes instructions for press inquiries regarding Cisco security notices. All Cisco security advisories are available at http://www.cisco.com/go/psirt. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.8 (Darwin)
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"data": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309. A vulnerability in the way Cisco IOS handles IPv6 packets could result in a remotely exploitable denial of service. Cisco IOS is prone to multiple denial-of-service vulnerabilities that occur in the virtual private dial-up (VPDN) when the Point-to-Point Tunneling Protocol (PPTP) is enabled. \nSuccessfully exploiting these issues may cause a memory leak or prevent the establishment of VPDN connections, denying service to legitimate users. ----------------------------------------------------------------------\n\nA new version (0.9.0.0 - Release Candidate 1) of the free Secunia PSI\nhas been released. The new version includes many new and advanced\nfeatures, which makes it even easier to stay patched. \n\n3) Some errors exist in the Data-Link-Switching (DLSw) feature when\nprocessing UDP and IP protocol 91 packets. \n\n4) An error exists in the processing of IPv6 packets, which can be\nexploited to prevent the interface from receiving additional traffic\nor to cause the device to crash (if RSVP service is configured on the\ninterface) by sending a specially crafted IPv6 packet to the device. \n\nSuccessful exploitation of this vulnerability requires that IPv6 and\ncertain IPv4 UDP services are enabled. \n\n5) An error exists in the implementation of Multicast Virtual Private\nNetworks (MVPN), which can be exploited to create extra multicast\nstates on the core routers via specially crafted Multicast\nDistribution Tree (MDT) Data Join messages. This can also be\nexploited to receive multicast traffic from VPNs that are not\nconnected to the same Provider Edge (PE). \n\nSuccessful exploitation of the multicast traffic leak requires that\nthe attacker knows or guesses the Border Gateway Protocol (BGP)\npeering IP address of a remote PE router and the address of the\nmulticast group that is used in other MPLS VPNs. \n\nSOLUTION:\nUpdate to the fixed version (please see the vendor\u0027s advisories for\ndetails). \n5) The vendor credits Thomas Morin. \n\nORIGINAL ADVISORY:\nCisco:\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml\n\nOTHER REFERENCES:\nUS-CERT VU#936177:\nhttp://www.kb.cert.org/vuls/id/936177\n\n----------------------------------------------------------------------\n\nAbout:\nThis Advisory was delivered by Secunia as a free service to help\neverybody keeping their systems up to date against the latest\nvulnerabilities. \n\nSubscribe:\nhttp://secunia.com/secunia_security_advisories/\n\nDefinitions: (Criticality, Where etc.)\nhttp://secunia.com/about_secunia_advisories/\n\n\nPlease Note:\nSecunia recommends that you verify all advisories you receive by\nclicking the link. \nSecunia NEVER sends attached files with advisories. \nSecunia does not advise people to install third party patches, only\nuse those supplied by the vendor. Attackers could\n exploit these vulnerabilities to access sensitive information\n or cause a denial of service. \n\n\nI. Further details are available in the US-CERT\n Vulnerability Notes Database. \n\n\nII. \n\n\nIII. \n\n\nIV. Please send\n email to \u003ccert@cert.org\u003e with \"TA08-087B Feedback VU#936177\" in the\n subject. \n ____________________________________________________________________\n\n For instructions on subscribing to or unsubscribing from this\n mailing list, visit \u003chttp://www.us-cert.gov/cas/signup.html\u003e. \n ____________________________________________________________________\n\n Produced 2008 by US-CERT, a government organization. PPTP is only one of the\nsupported tunneling protocols used to tunnel PPP frames within the\nVPDN solution. \n\nThe first vulnerability is a memory leak that occurs as a result of\nPPTP session termination. The second vulnerability may consume all\ninterface descriptor blocks on the affected device because those\ndevices will not reuse virtual access interfaces. If these\nvulnerabilities are repeatedly exploited, the memory and/or interface\nresources of the attacked device may be depleted. \n\nCisco has made free software available to address these vulnerabilities\nfor affected customers. \n\nThere are no workarounds available to mitigate the effects of these\nvulnerabilities. \n\nThis advisory is posted at \nhttp://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml\n\nNote: The March 26, 2008 publication includes five security\nadvisories. The advisories all address vulnerabilities in Cisco\u0027s\nInternetwork Operating System (IOS) software. Each advisory lists the\nreleases that correct the vulnerability described in the advisory,\nand also lists the releases that correct the vulnerabilities in the\nother five advisories. Please reference the following software table\nto find a release that fixes all published software advisories as of\nMarch 26th, 2008:\n\n * March 26th Bundled IOS Advisory Table\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-bundle.shtml\n\nIndividual publication links are listed below:\n\n * Cisco IOS Virtual Private Dial-up Network Denial of Service\n Vulnerability\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml\n \n * Multiple DLSw Denial of Service Vulnerabilities in Cisco IOS\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml\n \n * Cisco IOS User Datagram Protocol Delivery Issue For IPv4/IPv6\n Dual-stack Routers\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml\n \n * Vulnerability in Cisco IOS with OSPF, MPLS VPN, and Supervisor\n 32, Supervisor 720, or Route Switch Processor 720\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-queue.shtml\n \n * Cisco IOS Multicast Virtual Private Network (MVPN) Data Leak\n http://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml\n \n\nAffected Products\n=================\n\nDevices that are running certain Cisco IOS versions prior to 12.3\nwith VPDN enabled may be affected by these vulnerabilities. \n\nVulnerable Products\n+------------------\n\nDevices that are running affected versions of Cisco IOS with VPDN\nenabled and are configured to accept termination of PPTP sessions are\nvulnerable. \n\nTo determine whether VPDN is enabled on your device, log in to the\ndevice and issue the command-line interface (CLI) command \"show\nrunning-config\". If the output contains \"vpdn enable\" along with a \n\"vpdn-group \u003cname\u003e\" command, VPDN is enabled on the device. The device\nwill accept termination of PPTP sessions if the command \"protocol any\"\nor \"protocol pptp\" is defined under the \"vpdn-group \u003cname\u003e\" command. \nThe following example shows a device that is running VPDN and will \naccept termination of PPTP sessions:\n\n Router#show running-config \n Building configuration... \n \n !\n !--- Output truncated. \n !\n \n vpdn enable\n \n !\n \n vpdn-group test_only\n ! Default PPTP VPDN group\n accept-dialin\n protocol pptp\n virtual-template 1\n \n !\n !---Remaining output truncated. \n \n\nTo determine the software version running on a Cisco product, log in\nto the device and issue the \"show version\" command to display the\nsystem banner. Cisco IOS software will identify itself as\n\"Internetwork Operating System Software\" or simply \"IOS.\" On the next\nline of output, the image name will be displayed between parentheses,\nfollowed by \"Version\" and the IOS release name. Other Cisco devices\nwill not have the \"show version\" command or will give different output. \n\nThe following example identifies a Cisco product that is running\nCisco IOS release 12.2(7):\n\n Cisco Internetwork Operating System Software \n IOS (tm) 7200 Software (C7200-IS-M), Version 12.2(7), RELEASE SOFTWARE (fc1)\n Copyright (c) 1986-2002 by cisco Systems, Inc. \n Compiled Tue 15-Jan-02 18:31 by pwade\n Image text-base: 0x600089C0, data-base: 0x613A6000\n\nAdditional information about Cisco IOS release naming can be found at\nhttp://www.cisco.com/warp/public/620/1.html. \n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nDevices that are running Cisco IOS versions 12.3 and later are not\naffected by these vulnerabilities. Devices that are explicitly\nconfigured for VPDN protocols other than PPTP are not affected. \n\nDevices that are running Cisco IOS versions prior to 12.3 and do not\nhave VPDN enabled are not affected by these vulnerabilities. \n\nCisco IOS XR is not affected by these vulnerabilities. \n\nDetails\n=======\n\nVPDNs securely carry private data over a public network, allowing\nremote users to access a private network over a shared infrastructure\nsuch as the Internet. VPDNs maintain the same security and management\npolicies as a private network, while providing a cost-effective\nmethod for point-to-point connections between remote users and a\ncentral network. \n\nPPTP is a network protocol that enables the secure transfer of data\nfrom a remote client to a private enterprise server by creating a\nVPDN across TCP/IP-based data networks. PPTP supports on-demand,\nmultiprotocol, virtual private networking over public networks, such\nas the Internet. \n\nDetails regarding the two known vulnerabilities in Cisco IOS devices\nthat are running affected versions of system software follow:\n\n * Memory Leak due to PPTP Session Termination\n\n Upon completion of a PPTP session, memory is leaked from the\n processor memory on the terminating device. This is shown in the\n output of \"show process memory\" under the *Dead* process. The \n *Dead* process is not a real process. Its function is to account \n for the memory that is allocated under the context of another \n process which has terminated, in this case PPTP. When the \n administrator is logged into the device, if the device is under \n exploitation, the Holding entry of the *Dead* process under the \n \"show process memory\" command will be increasing. Following is \n an example showing a device that is holding *Dead* memory:\n \n Router#show process memory \n Total: 199718560, Used: 11147828, Free: 188570732\n PID TTY Allocated Freed Holding Getbufs Retbufs Process\n 0 0 99812 1848 8415816 0 0 *Init* \n 0 0 444 778840 444 0 0 *Sched* \n 0 0 17481700 4930848 819672 180908 0 *Dead* \n 1 0 284 284 3828 0 0 Load Meter \n \n !--- Output truncated. \n \n The CLI command \"show memory dead\" allows administrators to examine\n the contents of *Dead*. The output will display many occurrences\n of PPTP in the output if the PPTP process is causing the leak. \n The following example shows the dead memory for a device that has\n been exploited by the vulnerability\n \n Router#show memory dead\n Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)\n Processor 6225FF40 224002240 11906736 212095504 212082872 212084464\n I/O 20000000 33554440 994136 32560304 32560304 32560252\n I/O-2 F800000 8388616 1020632 7367984 7367984 7367932\n \n\n Processor memory\n \n Address Bytes Prev Next Ref PrevF NextF Alloc PC what\n 62275DC8 0000000048 62275D68 62275E24 001 ------- ------- 60654230 PPTP create idb\n 62275E24 0000000052 62275DC8 62275E84 001 ------- ------- 60654230 PPTP create idb\n 62275E84 0000000052 62275E24 62275EE4 001 ------- ------- 60654230 PPTP create idb\n .... \n \n !--- remaining output truncated. \n \n This vulnerability is documented in Cisco bug ID CSCsj58566 \n and Common Vulnerabilities and Exposures (CVE) identifier \n CVE-2008-1151 has been assigned to this vulnerability. \n\n * Virtual Access Interfaces Are Not Re-used\n\n Upon completion of a PPTP session, affected devices do not remove\n the virtual access interface that is associated with the PPTP\n session and do not reuse the interfaces in any future\n connections. \n\n This situation can result in an exhaustion of the interface\n descriptor block (IDB) limit, which will prevent any new\n interfaces being created within Cisco IOS, effectively blocking\n all new VPDN connections, even though the router may still have\n enough processor memory to remain up and running. A reload of the\n device is required to remove the interfaces. \n\n An IDB is a Cisco IOS internal data structure that contains\n information such as the IP address, interface state, and packet\n statistics. Cisco IOS software maintains one IDB for each\n interface present on a platform and one IDB for each\n subinterface. \n\n Further documentation on Cisco IOS IDBs can be found at: \n http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_tech_note09186a0080094322.shtml\n This vulnerability is documented in Cisco bug ID CSCdv59309 \n and Common Vulnerabilities and Exposures (CVE) identifier \n CVE-2008-1150 has been assigned to this vulnerability. \n\nVulnerability Scoring Details\n=============================\n\nCisco is providing scores for the vulnerabilities in this advisory\nbased on the Common Vulnerability Scoring System (CVSS). The CVSS\nscoring in this Security Advisory is done in accordance with CVSS\nversion 2.0. \n\nCisco will provide a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of\nthe vulnerability in individual networks. \n\nCVSS is a standards based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided an FAQ to answer additional questions regarding\nCVSS at \nhttp://www.cisco.com/web/about/security/intelligence/cvss-qandas.html\n\nCisco has also provided a CVSS calculator to help compute the\nenvironmental impact for individual networks at \nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\nCSCsj58566 - Memory Leak due to PPTP Session Termination\n\n CVSS Base Score - 7.1\n\n Access Vector: Network\n Access Complexity: Medium\n Authentication: None\n\n Confidentiality Impact: None\n Integrity Impact: None\n Availability Impact: Complete\n\n CVSS Temporal Score - 5.9\n\n Exploitability: Functional\n Remediation Level: Official-Fix\n Report Confidence: Confirmed\n\nCSCdv59309 - Virtual Access Interfaces Are Not Re-used\n\n CVSS Base Score - 4.3\n\n Access Vector: Network\n Access Complexity: Medium\n Authentication: None\n\n Confidentiality Impact: None\n Integrity Impact: None\n Availability Impact: Partial\n\n CVSS Temporal Score - 3.6\n\n Exploitability: Functional\n Remediation Level: Official-Fix\n Report Confidence: Confirmed\n\nImpact\n======\n\nSuccessful exploitation of the vulnerability may result in a memory\nleak of processor memory or consumption of all available IDBs on the\ndevice. With continued exploitation, the device will deplete its\nprocessor memory or reach an IDB limit. Both impacts would result in\na denial of service condition for the device. \n\nSoftware Versions and Fixes\n===========================\n\nWhen considering software upgrades, also consult \nhttp://www.cisco.com/go/psirt and any subsequent advisories to \ndetermine exposure and a complete upgrade solution. \n\nIn all cases, customers should exercise caution to be certain the\ndevices to be upgraded contain sufficient memory and that current\nhardware and software configurations will continue to be supported\nproperly by the new release. If the information is not clear, contact\nthe Cisco Technical Assistance Center (\"TAC\") or your contracted\nmaintenance provider for assistance. \n\nEach row of the Cisco IOS software table (below) names a Cisco IOS\nrelease train. If a given release train is vulnerable, then the\nearliest possible releases that contain the fix (along with the\nanticipated date of availability for each, if applicable) are listed\nin the \"First Fixed Release\" column of the table. The \"Recommended\nRelease\" column indicates the releases which have fixes for all the\npublished vulnerabilities at the time of this Advisory. A device\nrunning a release in the given train that is earlier than the release\nin a specific column (less than the First Fixed Release) is known to\nbe vulnerable. Cisco recommends upgrading to a release equal to or\nlater than the release in the \"Recommended Releases\" column of the\ntable. \n\n+----------------------------------------+\n| Major | Availability of Repaired |\n| Release | Releases |\n|------------+---------------------------|\n| Affected | First Fixed | Recommended |\n| 12.0-Based | Release | Release |\n| Releases | | |\n|------------+-------------+-------------|\n| 12.0 | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0DA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0DB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0DC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0S | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SP | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0ST | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0SZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0T | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0W | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0WC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0WT | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.0(7)XE2 | |\n| | are | |\n| 12.0XE | vulnerable, | |\n| | release | |\n| | 12.0(7)XE2 | |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n|------------+-------------+-------------|\n| 12.0XF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XI | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XJ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XK | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XM | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XN | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XQ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XR | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XS | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XV | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.0XW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| Affected | First Fixed | Recommended |\n| 12.1-Based | Release | Release |\n| Releases | | |\n|------------+-------------+-------------|\n| 12.1 | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1AA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1AX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.1(22)AY1 | |\n| | are | |\n| 12.1AY | vulnerable, | 12.1(22) |\n| | release | EA11 |\n| | 12.1(22)AY1 | |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n|------------+-------------+-------------|\n| 12.1AZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1CX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1DA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1DB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1DC | first fixed | 12.4(18a) |\n| | in 12.2B | |\n|------------+-------------+-------------|\n| 12.1E | Vulnerable; | |\n| | contact TAC | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.1(11)EA1 | |\n| | are | |\n| 12.1EA | vulnerable, | 12.1(22) |\n| | release | EA11 |\n| | 12.1(11)EA1 | |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n|------------+-------------+-------------|\n| 12.1EB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1EC | first fixed | 12.3(23)BC1 |\n| | in 12.2BC | |\n|------------+-------------+-------------|\n| 12.1EO | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1EU | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1EV | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1EW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1EX | Vulnerable; | |\n| | contact TAC | |\n|------------+-------------+-------------|\n| 12.1EY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1EZ | Vulnerable; | |\n| | contact TAC | |\n|------------+-------------+-------------|\n| 12.1GA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1GB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1T | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| 12.1XA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XI | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XJ | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.1XK | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XL | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XM | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.1XN | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XO | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XP | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XQ | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XR | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XS | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XT | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.1XU | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XV | first fixed | 12.3(26) |\n| | in 12.2XB | |\n|------------+-------------+-------------|\n| 12.1XW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1XX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1XY | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| 12.1XZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YA | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YB | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YC | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YD | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.1(5)YE6 | |\n| | are | |\n| | vulnerable, | |\n| 12.1YE | release | 12.3(26) |\n| | 12.1(5)YE6 | |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n| | first fixed | |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YF | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.1YG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.1YH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.1YI | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.1YJ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| Affected | First Fixed | Recommended |\n| 12.2-Based | Release | Release |\n| Releases | | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2 | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| 12.2B | 12.2(4)B5 | 12.4(18a) |\n|------------+-------------+-------------|\n| | 12.2(15) | |\n| | BC1e | |\n| | | |\n| 12.2BC | 12.2(15) | 12.3(23)BC1 |\n| | BC2d | |\n| | | |\n| | 12.2(8)BC1 | |\n|------------+-------------+-------------|\n| | 12.2(4)BW1 | |\n| 12.2BW | | 12.3(26) |\n| | 12.2(4)BW1a | |\n|------------+-------------+-------------|\n| 12.2BY | 12.2(8)BY | 12.4(18a) |\n|------------+-------------+-------------|\n| 12.2BZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2CX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2CY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2CZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2DA | Vulnerable; | |\n| | contact TAC | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2DD | first fixed | 12.4(18a) |\n| | in 12.2B | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2DX | first fixed | 12.4(18a) |\n| | in 12.2B | |\n|------------+-------------+-------------|\n| 12.2EU | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2EW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2EWA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2EX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2EY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2EZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2FX | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2FY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2FZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2IXA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2IXB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2IXC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2IXD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2IXE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2JA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2JK | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2MB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2MC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.2(18)S | |\n| | are | |\n| | vulnerable, | |\n| | release | |\n| 12.2S | 12.2(18)S | 12.2(25)S15 |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n| | migrate to | |\n| | any release | |\n| | in 12.2SRC | |\n|------------+-------------+-------------|\n| 12.2SB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SBC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SCA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SED | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SEG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SGA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SM | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SO | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SRA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SRB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SRC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2SU | migrate to | 12.4(18a) |\n| | any release | |\n| | in 12.3T | |\n|------------+-------------+-------------|\n| 12.2SV | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SVA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SVC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SVD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Releases | |\n| | prior to | |\n| | 12.2(17a)SX | |\n| | are | |\n| | vulnerable, | |\n| | release | 12.2(18) |\n| 12.2SX | 12.2(17a)SX | SXF13 |\n| | and later | |\n| | are not | |\n| | vulnerable; | |\n| | migrate to | |\n| | any release | |\n| | in 12.2SXF | |\n|------------+-------------+-------------|\n| 12.2SXA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SXB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SXD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SXE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SXF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2SXH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2SY | migrate to | 12.2(18) |\n| | any release | SXF13 |\n| | in 12.2SXB | |\n|------------+-------------+-------------|\n| | | 12.2(25)S15 |\n| | Vulnerable; | |\n| 12.2SZ | migrate to | 12.2(28) |\n| | any release | SB12 |\n| | in 12.2SRC | |\n| | | 12.2(33)SRC |\n|------------+-------------+-------------|\n| | 12.2(15)T4e | |\n| 12.2T | | 12.3(26) |\n| | 12.2(8)T | |\n|------------+-------------+-------------|\n| 12.2TPC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2UZ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XA | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.2XB | 12.2(2)XB5 | 12.3(26) |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XC | migrate to | 12.4(18a) |\n| | any release | |\n| | in 12.3T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XD | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XE | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XF | first fixed | 12.3(23)BC1 |\n| | in 12.2BC | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XG | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XH | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XI | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XJ | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XK | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.2XL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2XM | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2XN | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2XO | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XQ | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.2XR | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XS | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XT | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XU | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2XV | migrate to | 12.3(26) |\n| | any release | |\n| | in 12.3 | |\n|------------+-------------+-------------|\n| 12.2XW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YA | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2YC | first fixed | 12.3(26) |\n| | in 12.2T | |\n|------------+-------------+-------------|\n| 12.2YD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | | 12.2(25)S15 |\n| | Vulnerable; | |\n| 12.2YE | migrate to | 12.2(28) |\n| | any release | SB12 |\n| | in 12.2SRC | |\n| | | 12.2(33)SRC |\n|------------+-------------+-------------|\n| 12.2YF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YJ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YK | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YM | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YN | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2YO | migrate to | 12.2(18) |\n| | any release | SXF13 |\n| | in 12.2SXB | |\n|------------+-------------+-------------|\n| 12.2YP | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YQ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YR | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YS | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YT | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YU | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YV | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2YW | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2YX | migrate to | 12.4(18a) |\n| | any release | |\n| | in 12.3T | |\n|------------+-------------+-------------|\n| 12.2YY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| | | 12.2(25)S15 |\n| | Vulnerable; | |\n| 12.2YZ | migrate to | 12.2(28) |\n| | any release | SB12 |\n| | in 12.2SRC | |\n| | | 12.2(33)SRC |\n|------------+-------------+-------------|\n| | Vulnerable; | |\n| 12.2ZA | migrate to | 12.2(18) |\n| | any release | SXF13 |\n| | in 12.2SXB | |\n|------------+-------------+-------------|\n| 12.2ZB | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZC | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZD | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZE | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZF | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZG | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZH | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZJ | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZL | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZP | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZU | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| 12.2ZY | Not | |\n| | Vulnerable | |\n|------------+-------------+-------------|\n| Affected | First Fixed | Recommended |\n| 12.3-Based | Release | Release |\n| Releases | | |\n|----------------------------------------|\n| There are no affected 12.3 based |\n| releases |\n|----------------------------------------|\n| Affected | First Fixed | Recommended |\n| 12.4-Based | Release | Release |\n| Releases | | |\n|----------------------------------------|\n| There are no affected 12.4 based |\n| releases |\n+----------------------------------------+\n\nWorkarounds\n===========\n\nThere are no workarounds for this vulnerability. Cisco recommends\nupgrading to the fixed version of Cisco IOS. \n\nObtaining Fixed Software\n========================\n\nCisco will make free software available to address this vulnerability\nfor affected customers. This advisory will be updated as fixed\nsoftware becomes available. Prior to deploying software, customers\nshould consult their maintenance provider or check the software for\nfeature set compatibility and known issues specific to their\nenvironment. \n\nCustomers may only install and expect support for the feature sets\nthey have purchased. By installing, downloading, accessing or\notherwise using such software upgrades, customers agree to be bound\nby the terms of Cisco\u0027s software license terms found at \nhttp://www.cisco.com/public/sw-license-agreement.html \nor as otherwise set forth at Cisco.com Downloads at \nhttp://www.cisco.com/public/sw-center/sw-usingswc.shtml. \n\nDo not contact either \"psirt@cisco.com\" or \"security-alert@cisco.com\"\nfor software upgrades. \n\nCustomers with Service Contracts\n+-------------------------------\n\nCustomers with contracts should obtain upgraded software through\ntheir regular update channels. For most customers, this means that\nupgrades should be obtained through the Software Center on Cisco\u0027s\nworldwide website at http://www.cisco.com. \n\nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through\nprior or existing agreement with third-party support organizations\nsuch as Cisco Partners, authorized resellers, or service providers\nshould contact that support organization for guidance and assistance\nwith the appropriate course of action in regards to this advisory. \n\nThe effectiveness of any workaround or fix is dependent on specific\ncustomer situations such as product mix, network topology, traffic\nbehavior, and organizational mission. Due to the variety of affected\nproducts and releases, customers should consult with their service\nprovider or support organization to ensure any applied workaround or\nfix is the most appropriate for use in the intended network before it\nis deployed. \n\nCustomers without Service Contracts\n+----------------------------------\n\nCustomers who purchase direct from Cisco but who do not hold a Cisco\nservice contract and customers who purchase through third-party\nvendors but are unsuccessful at obtaining fixed software through\ntheir point of sale should get their upgrades by contacting the Cisco\nTechnical Assistance Center (TAC). TAC contacts are as follows. \n\n * +1 800 553 2447 (toll free from within North America)\n * +1 408 526 7209 (toll call from anywhere in the world)\n * e-mail: tac@cisco.com\n\nHave your product serial number available and give the URL of this\nnotice as evidence of your entitlement to a free upgrade. Free\nupgrades for non-contract customers must be requested through the\nTAC. \n\nRefer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml\nfor additional TAC contact information, including special localized\ntelephone numbers and instructions and e-mail addresses for use in\nvarious languages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerability described in this advisory. \n\nWe would like to thank Martin Kluge of Elxsi Security for reporting\nthese vulnerabilities to us. We greatly appreciate the opportunity to\nwork with researchers on security vulnerabilities, and welcome the\nopportunity to review and assist with security vulnerability reports\nagainst Cisco products. \n\nStatus of this Notice: FINAL\n============================\n\nTHIS DOCUMENT IS PROVIDED ON AN \"AS IS\" BASIS AND DOES NOT IMPLY ANY\nKIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF\nMERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE\nINFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS\nAT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS\nDOCUMENT AT ANY TIME. \n\nA stand-alone copy or Paraphrase of the text of this document that\nomits the distribution URL in the following section is an\nuncontrolled copy, and may lack important information or contain\nfactual errors. \n\nDistribution\n============\n\nThis advisory is posted on Cisco\u0027s worldwide website at :\n\nhttp://www.cisco.com/warp/public/707/cisco-sa-20080206-pptp.shtml\n\nIn addition to worldwide web posting, a text version of this notice\nis clear-signed with the Cisco PSIRT PGP key and is posted to the\nfollowing e-mail and Usenet news recipients. \n\n * cust-security-announce@cisco.com\n * first-teams@first.org\n * bugtraq@securityfocus.com\n * vulnwatch@vulnwatch.org\n * cisco@spot.colorado.edu\n * cisco-nsp@puck.nether.net\n * full-disclosure@lists.grok.org.uk\n * comp.dcom.sys.cisco@newsgate.cisco.com\n\nFuture updates of this advisory, if any, will be placed on Cisco\u0027s\nworldwide website, but may or may not be actively announced on\nmailing lists or newsgroups. Users concerned about this problem are\nencouraged to check the above URL for any updates. \n\nRevision History\n================\n\n+---------------------------------------+\n| Revision | | Initial |\n| 1.0 | 2008-March-26 | public |\n| | | release |\n+---------------------------------------+\n\nCisco Security Procedures\n=========================\n\nComplete information on reporting security vulnerabilities in Cisco\nproducts, obtaining assistance with security incidents, and\nregistering to receive security information from Cisco, is available\non Cisco\u0027s worldwide website at \nhttp://www.cisco.com/en/US/products/products_security_vulnerability_policy.html\nThis includes instructions for press inquiries regarding Cisco \nsecurity notices. All Cisco security advisories are available at \nhttp://www.cisco.com/go/psirt. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1.4.8 (Darwin)\n\niEYEARECAAYFAkfqTdMACgkQ86n/Gc8U/uBf1wCdEyVVCfrw98IoEeZshHo6pyDu\n3MwAoJuSF26Yz83ZdOc/23SiXDy1drER\n=U8Nj\n-----END PGP SIGNATURE-----\n",
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"data": "resource management error",
"sources": [
{
"db": "CNNVD",
"id": "CNNVD-200803-446"
}
],
"trust": 0.6
}
}
FKIE_CVE-2008-1150
Vulnerability from fkie_nvd - Published: 2008-03-27 17:44 - Updated: 2025-04-09 00:30{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2E12D45E-5FF2-4794-AF72-29F388B67E8E",
"versionEndIncluding": "12.2",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309."
},
{
"lang": "es",
"value": "La componente red privada virtual dial-up (VPDN) de Cisco IOS versiones anteriores a 12.3 permite a atacantes remotos provocar una denegaci\u00f3n de servicio (agotamiento de recursos) a trav\u00e9s de una serie de sesiones PPTP, en relaci\u00f3n con la persistencia de las estructuras de datos de la interfaz de descriptor de bloque (BID) despu\u00e9s de la terminaci\u00f3n proceso, tambi\u00e9n conocido como bug CSCdv59309 ID."
}
],
"id": "CVE-2008-1150",
"lastModified": "2025-04-09T00:30:58.490",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2008-03-27T17:44:00.000",
"references": [
{
"source": "psirt@cisco.com",
"url": "http://secunia.com/advisories/29507"
},
{
"source": "psirt@cisco.com",
"url": "http://securitytracker.com/id?1019714"
},
{
"source": "psirt@cisco.com",
"tags": [
"Patch"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080969862.shtml"
},
{
"source": "psirt@cisco.com",
"url": "http://www.securityfocus.com/bid/28460"
},
{
"source": "psirt@cisco.com",
"tags": [
"US Government Resource"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA08-087B.html"
},
{
"source": "psirt@cisco.com",
"url": "http://www.vupen.com/english/advisories/2008/1006/references"
},
{
"source": "psirt@cisco.com",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41484"
},
{
"source": "psirt@cisco.com",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5598"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://secunia.com/advisories/29507"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://securitytracker.com/id?1019714"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080969862.shtml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.securityfocus.com/bid/28460"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"US Government Resource"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA08-087B.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "http://www.vupen.com/english/advisories/2008/1006/references"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41484"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5598"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
GSD-2008-1150
Vulnerability from gsd - Updated: 2023-12-13 01:23{
"GSD": {
"alias": "CVE-2008-1150",
"description": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309.",
"id": "GSD-2008-1150"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2008-1150"
],
"details": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309.",
"id": "GSD-2008-1150",
"modified": "2023-12-13T01:23:03.295576Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2008-1150",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "ADV-2008-1006",
"refsource": "VUPEN",
"url": "http://www.vupen.com/english/advisories/2008/1006/references"
},
{
"name": "cisco-ios-vpdn-idb-dos(41484)",
"refsource": "XF",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41484"
},
{
"name": "28460",
"refsource": "BID",
"url": "http://www.securityfocus.com/bid/28460"
},
{
"name": "20080326 Cisco IOS Virtual Private Dial-up Network Denial of Service Vulnerability",
"refsource": "CISCO",
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080969862.shtml"
},
{
"name": "TA08-087B",
"refsource": "CERT",
"url": "http://www.us-cert.gov/cas/techalerts/TA08-087B.html"
},
{
"name": "oval:org.mitre.oval:def:5598",
"refsource": "OVAL",
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5598"
},
{
"name": "29507",
"refsource": "SECUNIA",
"url": "http://secunia.com/advisories/29507"
},
{
"name": "1019714",
"refsource": "SECTRACK",
"url": "http://securitytracker.com/id?1019714"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "12.2",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "psirt@cisco.com",
"ID": "CVE-2008-1150"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "en",
"value": "The virtual private dial-up network (VPDN) component in Cisco IOS before 12.3 allows remote attackers to cause a denial of service (resource exhaustion) via a series of PPTP sessions, related to the persistence of interface descriptor block (IDB) data structures after process termination, aka bug ID CSCdv59309."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "20080326 Cisco IOS Virtual Private Dial-up Network Denial of Service Vulnerability",
"refsource": "CISCO",
"tags": [
"Patch"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080969862.shtml"
},
{
"name": "28460",
"refsource": "BID",
"tags": [],
"url": "http://www.securityfocus.com/bid/28460"
},
{
"name": "1019714",
"refsource": "SECTRACK",
"tags": [],
"url": "http://securitytracker.com/id?1019714"
},
{
"name": "TA08-087B",
"refsource": "CERT",
"tags": [
"US Government Resource"
],
"url": "http://www.us-cert.gov/cas/techalerts/TA08-087B.html"
},
{
"name": "29507",
"refsource": "SECUNIA",
"tags": [],
"url": "http://secunia.com/advisories/29507"
},
{
"name": "ADV-2008-1006",
"refsource": "VUPEN",
"tags": [],
"url": "http://www.vupen.com/english/advisories/2008/1006/references"
},
{
"name": "cisco-ios-vpdn-idb-dos(41484)",
"refsource": "XF",
"tags": [],
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41484"
},
{
"name": "oval:org.mitre.oval:def:5598",
"refsource": "OVAL",
"tags": [],
"url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5598"
}
]
}
},
"impact": {
"baseMetricV2": {
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "HIGH",
"userInteractionRequired": false
}
},
"lastModifiedDate": "2017-09-29T01:30Z",
"publishedDate": "2008-03-27T17:44Z"
}
}
}
CERTA-2008-AVI-163
Vulnerability from certfr_avis - Published: - Updated:
Cisco a publié un bulletin de sécurité regroupant cinq bulletins sur des vulnérabilités séparées. Elles concernent toutes Cisco IOS et plus précisément PPTP, DLSw, IPv6, MVPN et MPLS VPN.
Description
Cisco IOS (Internetwork Operating System) est le système d'exploitation de la majorité des routeurs et commutateurs Cisco.
- PPTP : des vulnérabilités concernant une fuite de mémoire et une mauvaise gestion des blocs décrivant les interfaces permettent un épuisement des ressources entrainant un déni de service.
- DLSw : une vulnérabilité affectant le traitement des trames UDP et IP (protocole 91) permet un redémarrage ou un déni de service à distance par épuisement des ressources mémoire.
- IPv6 : une vulnérabilité permet à l'aide d'une trame IPv6, spécifiquement créée et ciblant un équipement, de provoquer un déni de service de l'interface ou de l'équipement en fonction des cas.
- MVPN : une trame MDT (Multicast Distribution Tree) spécifiquement créée permet de détourner une partie du trafic du réseau virtuel privé.
- MPLS VPN : une vulnérabilité permet le blocage des files, des fuites mémoire et le redémarrage de l'équipement.
Solution
Se référer au bulletin de sécurité Cisco 100893 du 26 mars 2008 pour l'obtention des correctifs (cf. section Documentation).
Les Cisco IOS déployés sont vulnérables dans les cas suivants :
- les versions antérieures à la 12.3 avec le VPDN (Virtual Private Dial-up Network) activé ;
- les versions antérieures à la 12.3 avec le DLSw (Data Link Switching) activé ;
- certaines versions antérieures à la 12.3 avec le support IPv6 activé ainsi que l'UDP en IPv4 ;
- certaines versions antérieures à la 12.3 avec le MVPN (Multicast Virtual Private Network) activé ;
- certaines sous-versions de la 12.2 équipant les Cisco Catalyst 6500 et Cisco 7600 router, configurées avec OSPF (Open Shortest Path First) et MPLS VPN (Multi Protocol Label Switching Virtual Private Networking).
| Vendor | Product | Description |
|---|
| Title | Publication Time | Tags | |
|---|---|---|---|
|
|
|||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [],
"affected_systems_content": "\u003cp\u003eLes \u003cTT\u003eCisco IOS\u003c/TT\u003e d\u00e9ploy\u00e9s sont vuln\u00e9rables dans les cas suivants : \u003cUL\u003e \u003cLI\u003eles versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eVPDN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eVirtual Private Dial-up Network\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003eles versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eDLSw\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eData Link Switching\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003ecertaines versions ant\u00e9rieures \u00e0 la 12.3 avec le support IPv6 activ\u00e9 ainsi que l\u0027UDP en IPv4 ;\u003c/LI\u003e \u003cLI\u003ecertaines versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eMVPN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eMulticast Virtual Private Network\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003ecertaines sous-versions de la 12.2 \u00e9quipant les \u003cSPAN class=\"textit\"\u003eCisco Catalyst 6500\u003c/SPAN\u003e et \u003cSPAN class=\n \"textit\"\u003eCisco 7600 router\u003c/SPAN\u003e, configur\u00e9es avec \u003cTT\u003eOSPF\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eOpen Shortest Path First\u003c/SPAN\u003e) et \u003cTT\u003eMPLS VPN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eMulti Protocol Label Switching Virtual Private Networking\u003c/SPAN\u003e).\u003c/LI\u003e \u003c/UL\u003e\u003c/p\u003e",
"content": "## Description\n\nCisco IOS (Internetwork Operating System) est le syst\u00e8me d\u0027exploitation\nde la majorit\u00e9 des routeurs et commutateurs Cisco.\n\n- PPTP : des vuln\u00e9rabilit\u00e9s concernant une fuite de m\u00e9moire et une\n mauvaise gestion des blocs d\u00e9crivant les interfaces permettent un\n \u00e9puisement des ressources entrainant un d\u00e9ni de service.\n- DLSw : une vuln\u00e9rabilit\u00e9 affectant le traitement des trames UDP et\n IP (protocole 91) permet un red\u00e9marrage ou un d\u00e9ni de service \u00e0\n distance par \u00e9puisement des ressources m\u00e9moire.\n- IPv6 : une vuln\u00e9rabilit\u00e9 permet \u00e0 l\u0027aide d\u0027une trame IPv6,\n sp\u00e9cifiquement cr\u00e9\u00e9e et ciblant un \u00e9quipement, de provoquer un d\u00e9ni\n de service de l\u0027interface ou de l\u0027\u00e9quipement en fonction des cas.\n- MVPN : une trame MDT (Multicast Distribution Tree) sp\u00e9cifiquement\n cr\u00e9\u00e9e permet de d\u00e9tourner une partie du trafic du r\u00e9seau virtuel\n priv\u00e9.\n- MPLS VPN : une vuln\u00e9rabilit\u00e9 permet le blocage des files, des fuites\n m\u00e9moire et le red\u00e9marrage de l\u0027\u00e9quipement.\n\n## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 Cisco 100893 du 26 mars 2008 pour\nl\u0027obtention des correctifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2008-1151",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1151"
},
{
"name": "CVE-2008-0537",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-0537"
},
{
"name": "CVE-2008-1156",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1156"
},
{
"name": "CVE-2008-1153",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1153"
},
{
"name": "CVE-2008-1150",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1150"
},
{
"name": "CVE-2008-1152",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1152"
}
],
"links": [
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-queue du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-queue.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-dlsw du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-bundle du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-bundle.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-pptp du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-IPv4IPv6 du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-mvpn du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml"
}
],
"reference": "CERTA-2008-AVI-163",
"revisions": [
{
"description": "version initiale.",
"revision_date": "2008-03-27T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "Cisco a publi\u00e9 un bulletin de s\u00e9curit\u00e9 regroupant cinq bulletins sur des\nvuln\u00e9rabilit\u00e9s s\u00e9par\u00e9es. Elles concernent toutes Cisco IOS et plus\npr\u00e9cis\u00e9ment PPTP, DLSw, IPv6, MVPN et MPLS VPN.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Cisco IOS",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 100893 du 26 mars 2008",
"url": null
}
]
}
CERTA-2008-AVI-163
Vulnerability from certfr_avis - Published: - Updated:
Cisco a publié un bulletin de sécurité regroupant cinq bulletins sur des vulnérabilités séparées. Elles concernent toutes Cisco IOS et plus précisément PPTP, DLSw, IPv6, MVPN et MPLS VPN.
Description
Cisco IOS (Internetwork Operating System) est le système d'exploitation de la majorité des routeurs et commutateurs Cisco.
- PPTP : des vulnérabilités concernant une fuite de mémoire et une mauvaise gestion des blocs décrivant les interfaces permettent un épuisement des ressources entrainant un déni de service.
- DLSw : une vulnérabilité affectant le traitement des trames UDP et IP (protocole 91) permet un redémarrage ou un déni de service à distance par épuisement des ressources mémoire.
- IPv6 : une vulnérabilité permet à l'aide d'une trame IPv6, spécifiquement créée et ciblant un équipement, de provoquer un déni de service de l'interface ou de l'équipement en fonction des cas.
- MVPN : une trame MDT (Multicast Distribution Tree) spécifiquement créée permet de détourner une partie du trafic du réseau virtuel privé.
- MPLS VPN : une vulnérabilité permet le blocage des files, des fuites mémoire et le redémarrage de l'équipement.
Solution
Se référer au bulletin de sécurité Cisco 100893 du 26 mars 2008 pour l'obtention des correctifs (cf. section Documentation).
Les Cisco IOS déployés sont vulnérables dans les cas suivants :
- les versions antérieures à la 12.3 avec le VPDN (Virtual Private Dial-up Network) activé ;
- les versions antérieures à la 12.3 avec le DLSw (Data Link Switching) activé ;
- certaines versions antérieures à la 12.3 avec le support IPv6 activé ainsi que l'UDP en IPv4 ;
- certaines versions antérieures à la 12.3 avec le MVPN (Multicast Virtual Private Network) activé ;
- certaines sous-versions de la 12.2 équipant les Cisco Catalyst 6500 et Cisco 7600 router, configurées avec OSPF (Open Shortest Path First) et MPLS VPN (Multi Protocol Label Switching Virtual Private Networking).
| Vendor | Product | Description |
|---|
| Title | Publication Time | Tags | |
|---|---|---|---|
|
|
|||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [],
"affected_systems_content": "\u003cp\u003eLes \u003cTT\u003eCisco IOS\u003c/TT\u003e d\u00e9ploy\u00e9s sont vuln\u00e9rables dans les cas suivants : \u003cUL\u003e \u003cLI\u003eles versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eVPDN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eVirtual Private Dial-up Network\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003eles versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eDLSw\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eData Link Switching\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003ecertaines versions ant\u00e9rieures \u00e0 la 12.3 avec le support IPv6 activ\u00e9 ainsi que l\u0027UDP en IPv4 ;\u003c/LI\u003e \u003cLI\u003ecertaines versions ant\u00e9rieures \u00e0 la 12.3 avec le \u003cTT\u003eMVPN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eMulticast Virtual Private Network\u003c/SPAN\u003e) activ\u00e9 ;\u003c/LI\u003e \u003cLI\u003ecertaines sous-versions de la 12.2 \u00e9quipant les \u003cSPAN class=\"textit\"\u003eCisco Catalyst 6500\u003c/SPAN\u003e et \u003cSPAN class=\n \"textit\"\u003eCisco 7600 router\u003c/SPAN\u003e, configur\u00e9es avec \u003cTT\u003eOSPF\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eOpen Shortest Path First\u003c/SPAN\u003e) et \u003cTT\u003eMPLS VPN\u003c/TT\u003e (\u003cSPAN class=\"textit\"\u003eMulti Protocol Label Switching Virtual Private Networking\u003c/SPAN\u003e).\u003c/LI\u003e \u003c/UL\u003e\u003c/p\u003e",
"content": "## Description\n\nCisco IOS (Internetwork Operating System) est le syst\u00e8me d\u0027exploitation\nde la majorit\u00e9 des routeurs et commutateurs Cisco.\n\n- PPTP : des vuln\u00e9rabilit\u00e9s concernant une fuite de m\u00e9moire et une\n mauvaise gestion des blocs d\u00e9crivant les interfaces permettent un\n \u00e9puisement des ressources entrainant un d\u00e9ni de service.\n- DLSw : une vuln\u00e9rabilit\u00e9 affectant le traitement des trames UDP et\n IP (protocole 91) permet un red\u00e9marrage ou un d\u00e9ni de service \u00e0\n distance par \u00e9puisement des ressources m\u00e9moire.\n- IPv6 : une vuln\u00e9rabilit\u00e9 permet \u00e0 l\u0027aide d\u0027une trame IPv6,\n sp\u00e9cifiquement cr\u00e9\u00e9e et ciblant un \u00e9quipement, de provoquer un d\u00e9ni\n de service de l\u0027interface ou de l\u0027\u00e9quipement en fonction des cas.\n- MVPN : une trame MDT (Multicast Distribution Tree) sp\u00e9cifiquement\n cr\u00e9\u00e9e permet de d\u00e9tourner une partie du trafic du r\u00e9seau virtuel\n priv\u00e9.\n- MPLS VPN : une vuln\u00e9rabilit\u00e9 permet le blocage des files, des fuites\n m\u00e9moire et le red\u00e9marrage de l\u0027\u00e9quipement.\n\n## Solution\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 Cisco 100893 du 26 mars 2008 pour\nl\u0027obtention des correctifs (cf. section Documentation).\n",
"cves": [
{
"name": "CVE-2008-1151",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1151"
},
{
"name": "CVE-2008-0537",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-0537"
},
{
"name": "CVE-2008-1156",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1156"
},
{
"name": "CVE-2008-1153",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1153"
},
{
"name": "CVE-2008-1150",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1150"
},
{
"name": "CVE-2008-1152",
"url": "https://www.cve.org/CVERecord?id=CVE-2008-1152"
}
],
"links": [
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-queue du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-queue.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-dlsw du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-dlsw.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-bundle du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-bundle.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-pptp du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-pptp.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-IPv4IPv6 du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-IPv4IPv6.shtml"
},
{
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 20080326-mvpn du 26 mars 2008 :",
"url": "http://www.cisco.com/warp/public/707/cisco-sa-20080326-mvpn.shtml"
}
],
"reference": "CERTA-2008-AVI-163",
"revisions": [
{
"description": "version initiale.",
"revision_date": "2008-03-27T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
}
],
"summary": "Cisco a publi\u00e9 un bulletin de s\u00e9curit\u00e9 regroupant cinq bulletins sur des\nvuln\u00e9rabilit\u00e9s s\u00e9par\u00e9es. Elles concernent toutes Cisco IOS et plus\npr\u00e9cis\u00e9ment PPTP, DLSw, IPv6, MVPN et MPLS VPN.\n",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans Cisco IOS",
"vendor_advisories": [
{
"published_at": null,
"title": "Bulletin de s\u00e9curit\u00e9 Cisco 100893 du 26 mars 2008",
"url": null
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.