cisco-sa-20180328-qos
Vulnerability from csaf_cisco
Published
2018-03-28 16:00
Modified
2018-04-27 21:15
Summary
Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability
Notes
Summary
A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges.
The vulnerability is due to incorrect bounds checking of certain values in packets that are destined for UDP port 18999 of an affected device. An attacker could exploit this vulnerability by sending malicious packets to an affected device. When the packets are processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code on the affected device with elevated privileges. The attacker could also leverage this vulnerability to cause the device to reload, causing a temporary DoS condition while the device is reloading.
The malicious packets must be destined to and processed by an affected device. Traffic transiting a device will not trigger the vulnerability.
Cisco has released software updates that address this vulnerability. There are workarounds for most affected Cisco products that address this vulnerability.
This advisory is available at the following link:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos"]
This advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication ["https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682"].
Vulnerable Products
This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS Software or Cisco IOS XE Software.
For information about which Cisco IOS and IOS XE Software releases are vulnerable, see the Fixed Software ["#fixed"] section of this advisory.
Assessing a Device
To determine whether a device that is running Cisco IOS Software or Cisco IOS XE Software may be affected by this vulnerability, administrators can log in to the device and use the show udp command in the CLI. On devices that do not support the show udp command, the show ip sockets command may be used as an alternative.
The device may be affected by this vulnerability if the show udp command returns output similar to the following example:
Router> show udp
Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 --any-- 18999 0 0 11 0
The Adaptive QoS for Dynamic Multipoint VPN (DMVPN) feature of Cisco IOS Software and Cisco IOS XE Software uses UDP port 18999 and may be open due to the provisioning of this feature on unaffected platforms. If UDP port 18999 is bound to a listening port on a device, use the Cisco IOS Software Checker to determine whether the device is running a vulnerable software release.
Determining the Cisco IOS Software Release
To determine which Cisco IOS Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and then refer to the system banner that appears. If the device is running Cisco IOS Software, the system banner displays text similar to Cisco Internetwork Operating System Software or Cisco IOS Software. The banner also displays the installed image name in parentheses, followed by the Cisco IOS Software release number and release name. Some Cisco devices do not support the show version command or may provide different output.
The following example shows the output of the command for a device that is running Cisco IOS Software Release 15.5(2)T1 and has an installed image name of C2951-UNIVERSALK9-M:
Router> show version
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(2)T1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2015 by Cisco Systems, Inc. Compiled Mon 22-Jun-15 09:32 by prod_rel_team . . .
For information about the naming and numbering conventions for Cisco IOS Software releases, see the Cisco IOS and NX-OS Software Reference Guide ["https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html"].
Determining the Cisco IOS XE Software Release
To determine which Cisco IOS XE Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and then refer to the system banner that appears. If the device is running Cisco IOS XE Software, the system banner displays Cisco IOS Software, Cisco IOS XE Software, or similar text.
The following example shows the output of the command for a device that is running Cisco IOS XE Software Release 16.2.1 and has an installed image name of CAT3K_CAA-UNIVERSALK9-M:
ios-xe-device# show version
Cisco IOS Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version Denali 16.2.1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2016 by Cisco Systems, Inc. Compiled Sun 27-Mar-16 21:47 by mcpre . . .
For information about the naming and numbering conventions for Cisco IOS XE Software releases, see the Cisco IOS and NX-OS Software Reference Guide ["https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html"].
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco IOS XR Software or Cisco NX-OS Software.
Workarounds
The following workaround is applicable on devices that support configurable inbound ports for Control Plane Policing (CoPP). Some families of Cisco devices such as the Cisco ASR 900 Series support CoPP only on specific ports and protocols. On these platforms, no workaround is available and customers should upgrade to a fixed software version.
Customers who do not use the Adaptive QoS for DMVPN feature can deny all traffic destined to UDP port 18999 on an affected device by using a CoPP policy similar to the following:
! -- ACL for CoPP Undesirable UDP class-map
! -- Ignore fragments to prevent them from being misclassified by the policy access-list 199 deny ip any any fragments ! -- Classify traffic destined to UDP Port 18999 so that we can drop it prior to being processed access-list 199 permit udp any any eq 18999 ! -- CoPP Undesirable UDP class-map class-map match-all undesirable-udp match access-group 199 ! -- Undesirable UDP Policy Map policy-map drop-udp class undesirable-udp drop ! -- Apply Undesirable UDP policy Map control-plane service-policy input drop-udp
On platforms that do not support the drop keyword within the Policy Map, customers may consider using a policy similar to the following as an alternative:
! -- ACL for CoPP Undesirable UDP class-map
! -- Ignore fragments to prevent them from being misclassified by the policy access-list 199 deny ip any any fragments ! -- Classify traffic destined to UDP Port 18999 so that we can drop it prior to being processed access-list 199 permit udp any any eq 18999 ! -- CoPP Undesirable UDP class-map class-map match-all undesirable-udp match access-group 199 ! -- Undesirable UDP Policy Map - Drop on Police Rate policy-map drop-udp class undesirable-udp police rate 8000 conform-action drop exceed-action drop violate-action drop ! -- Apply Undesirable UDP policy Map control-plane service-policy input drop-udp
If the Adaptive QoS for DMVPN feature is later configured, the device must be upgraded to an unaffected release of Cisco IOS Software or Cisco IOS XE Software and the CoPP policy must be removed.
Customers integrating this workaround into their environment are encouraged to test the adaptation in their lab prior to deployment and to reference the CoPP Best Practice Document at the following link: https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html ["https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html"]
Fixed Software
Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.html ["https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"]
Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page ["https://www.cisco.com/go/psirt"], to determine exposure and a complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC:
https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html ["https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"]
Customers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"], that identifies any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (“First Fixed”). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (“Combined First Fixed”).
Customers can use this tool to perform the following tasks:
Initiate a search by choosing one or more releases from a drop-down list or uploading a file from a local system for the tool to parse
Enter the output of the show version command for the tool to parse
Create a custom search by including all previously published Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication
To determine whether a release is affected by any published Cisco Security Advisory, use the Cisco IOS Software Checker ["https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"] on Cisco.com or enter a Cisco IOS Software or Cisco IOS XE Software release—for example, 15.1(4)M2 or 3.13.8S—in the following field:
For a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032"], Cisco IOS XE 3S Release Notes ["https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754"], or Cisco IOS XE 3SG Release Notes ["https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252"], depending on the Cisco IOS XE Software release.
Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy ["https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.
Source
This vulnerability was found during internal security testing.
Legal Disclaimer
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 standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.
{
"document": {
"acknowledgments": [
{
"summary": "This vulnerability was found during internal security testing."
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"notes": [
{
"category": "summary",
"text": "A vulnerability in the quality of service (QoS) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges.\r\n\r\nThe vulnerability is due to incorrect bounds checking of certain values in packets that are destined for UDP port 18999 of an affected device. An attacker could exploit this vulnerability by sending malicious packets to an affected device. When the packets are processed, an exploitable buffer overflow condition may occur. A successful exploit could allow the attacker to execute arbitrary code on the affected device with elevated privileges. The attacker could also leverage this vulnerability to cause the device to reload, causing a temporary DoS condition while the device is reloading.\r\n\r\nThe malicious packets must be destined to and processed by an affected device. Traffic transiting a device will not trigger the vulnerability.\r\n\r\nCisco has released software updates that address this vulnerability. There are workarounds for most affected Cisco products that address this vulnerability.\r\n\r\nThis advisory is available at the following link:\r\nhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos [\"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos\"]\r\nThis advisory is part of the March 28, 2018, release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication, which includes 20 Cisco Security Advisories that describe 22 vulnerabilities. For a complete list of the advisories and links to them, see Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication [\"https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682\"].",
"title": "Summary"
},
{
"category": "general",
"text": "This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS Software or Cisco IOS XE Software.\r\n\r\nFor information about which Cisco IOS and IOS XE Software releases are vulnerable, see the Fixed Software [\"#fixed\"] section of this advisory.\r\n Assessing a Device\r\nTo determine whether a device that is running Cisco IOS Software or Cisco IOS XE Software may be affected by this vulnerability, administrators can log in to the device and use the show udp command in the CLI. On devices that do not support the show udp command, the show ip sockets command may be used as an alternative.\r\n\r\nThe device may be affected by this vulnerability if the show udp command returns output similar to the following example:\r\n\r\n\r\nRouter\u003e show udp\r\n Proto Remote Port Local Port In Out Stat TTY OutputIF 17 0.0.0.0 0 --any-- 18999 0 0 11 0\r\n\r\nThe Adaptive QoS for Dynamic Multipoint VPN (DMVPN) feature of Cisco IOS Software and Cisco IOS XE Software uses UDP port 18999 and may be open due to the provisioning of this feature on unaffected platforms. If UDP port 18999 is bound to a listening port on a device, use the Cisco IOS Software Checker to determine whether the device is running a vulnerable software release.\r\n Determining the Cisco IOS Software Release\r\nTo determine which Cisco IOS Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and then refer to the system banner that appears. If the device is running Cisco IOS Software, the system banner displays text similar to Cisco Internetwork Operating System Software or Cisco IOS Software. The banner also displays the installed image name in parentheses, followed by the Cisco IOS Software release number and release name. Some Cisco devices do not support the show version command or may provide different output.\r\n\r\nThe following example shows the output of the command for a device that is running Cisco IOS Software Release 15.5(2)T1 and has an installed image name of C2951-UNIVERSALK9-M:\r\n\r\n\r\nRouter\u003e show version\r\n Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(2)T1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2015 by Cisco Systems, Inc. Compiled Mon 22-Jun-15 09:32 by prod_rel_team . . .\r\n\r\nFor information about the naming and numbering conventions for Cisco IOS Software releases, see the Cisco IOS and NX-OS Software Reference Guide [\"https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html\"].\r\n Determining the Cisco IOS XE Software Release\r\nTo determine which Cisco IOS XE Software release is running on a device, administrators can log in to the device, use the show version command in the CLI, and then refer to the system banner that appears. If the device is running Cisco IOS XE Software, the system banner displays Cisco IOS Software, Cisco IOS XE Software, or similar text.\r\n\r\nThe following example shows the output of the command for a device that is running Cisco IOS XE Software Release 16.2.1 and has an installed image name of CAT3K_CAA-UNIVERSALK9-M:\r\n\r\n\r\nios-xe-device# show version\r\n Cisco IOS Software, Catalyst L3 Switch Software (CAT3K_CAA-UNIVERSALK9-M), Version Denali 16.2.1, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2016 by Cisco Systems, Inc. Compiled Sun 27-Mar-16 21:47 by mcpre . . .\r\n\r\nFor information about the naming and numbering conventions for Cisco IOS XE Software releases, see the Cisco IOS and NX-OS Software Reference Guide [\"https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html\"].",
"title": "Vulnerable Products"
},
{
"category": "general",
"text": "No other Cisco products are currently known to be affected by this vulnerability.\r\n\r\nCisco has confirmed that this vulnerability does not affect Cisco IOS XR Software or Cisco NX-OS Software.",
"title": "Products Confirmed Not Vulnerable"
},
{
"category": "general",
"text": "The following workaround is applicable on devices that support configurable inbound ports for Control Plane Policing (CoPP). Some families of Cisco devices such as the Cisco ASR 900 Series support CoPP only on specific ports and protocols. On these platforms, no workaround is available and customers should upgrade to a fixed software version.\r\n\r\nCustomers who do not use the Adaptive QoS for DMVPN feature can deny all traffic destined to UDP port 18999 on an affected device by using a CoPP policy similar to the following:\r\n\r\n\r\n! -- ACL for CoPP Undesirable UDP class-map\r\n! -- Ignore fragments to prevent them from being misclassified by the policy access-list 199 deny ip any any fragments ! -- Classify traffic destined to UDP Port 18999 so that we can drop it prior to being processed access-list 199 permit udp any any eq 18999 ! -- CoPP Undesirable UDP class-map class-map match-all undesirable-udp match access-group 199 ! -- Undesirable UDP Policy Map policy-map drop-udp class undesirable-udp drop ! -- Apply Undesirable UDP policy Map control-plane service-policy input drop-udp\r\n\r\nOn platforms that do not support the drop keyword within the Policy Map, customers may consider using a policy similar to the following as an alternative:\r\n\r\n\r\n! -- ACL for CoPP Undesirable UDP class-map\r\n! -- Ignore fragments to prevent them from being misclassified by the policy access-list 199 deny ip any any fragments ! -- Classify traffic destined to UDP Port 18999 so that we can drop it prior to being processed access-list 199 permit udp any any eq 18999 ! -- CoPP Undesirable UDP class-map class-map match-all undesirable-udp match access-group 199 ! -- Undesirable UDP Policy Map - Drop on Police Rate policy-map drop-udp class undesirable-udp police rate 8000 conform-action drop exceed-action drop violate-action drop ! -- Apply Undesirable UDP policy Map control-plane service-policy input drop-udp\r\n\r\nIf the Adaptive QoS for DMVPN feature is later configured, the device must be upgraded to an unaffected release of Cisco IOS Software or Cisco IOS XE Software and the CoPP policy must be removed.\r\n\r\nCustomers integrating this workaround into their environment are encouraged to test the adaptation in their lab prior to deployment and to reference the CoPP Best Practice Document at the following link: https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html [\"https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html\"]",
"title": "Workarounds"
},
{
"category": "general",
"text": "Cisco has released free software updates that address the vulnerability described in this advisory. Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:\r\nhttps://www.cisco.com/c/en/us/products/end-user-license-agreement.html [\"https://www.cisco.com/c/en/us/products/end-user-license-agreement.html\"]\r\n\r\nAdditionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.\r\n\r\nWhen considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page [\"https://www.cisco.com/go/psirt\"], to determine exposure and a complete upgrade solution.\r\n\r\nIn all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.\r\n\r\nCustomers Without Service Contracts\r\n\r\nCustomers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC:\r\nhttps://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html [\"https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html\"]\r\n\r\nCustomers should have the product serial number available and be prepared to provide the URL of this advisory as evidence of entitlement to a free upgrade.\r\n Cisco IOS and IOS XE Software\r\nTo help customers determine their exposure to vulnerabilities in Cisco IOS and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"], that identifies any Cisco Security Advisories that impact a specific software release and the earliest release that fixes the vulnerabilities described in each advisory (\u201cFirst Fixed\u201d). If applicable, the tool also returns the earliest release that fixes all the vulnerabilities described in all the advisories identified (\u201cCombined First Fixed\u201d).\r\n\r\nCustomers can use this tool to perform the following tasks:\r\n\r\nInitiate a search by choosing one or more releases from a drop-down list or uploading a file from a local system for the tool to parse\r\nEnter the output of the show version command for the tool to parse\r\nCreate a custom search by including all previously published Cisco Security Advisories, a specific advisory, or all advisories in the most recent bundled publication\r\n\r\nTo determine whether a release is affected by any published Cisco Security Advisory, use the Cisco IOS Software Checker [\"https://sec.cloudapps.cisco.com/security/center/softwarechecker.x\"] on Cisco.com or enter a Cisco IOS Software or Cisco IOS XE Software release\u2014for example, 15.1(4)M2 or 3.13.8S\u2014in the following field:\r\n\r\n\r\n\r\n\r\n\r\nFor a mapping of Cisco IOS XE Software releases to Cisco IOS Software releases, refer to the Cisco IOS XE 2 Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032\"], Cisco IOS XE 3S Release Notes [\"https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754\"], or Cisco IOS XE 3SG Release Notes [\"https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252\"], depending on the Cisco IOS XE Software release.",
"title": "Fixed Software"
},
{
"category": "general",
"text": "To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy [\"https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html\"]. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.",
"title": "Vulnerability Policy"
},
{
"category": "general",
"text": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.",
"title": "Exploitation and Public Announcements"
},
{
"category": "general",
"text": "This vulnerability was found during internal security testing.",
"title": "Source"
},
{
"category": "legal_disclaimer",
"text": "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.\r\n\r\nA standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.",
"title": "Legal Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "Emergency Support:\r\n+1 877 228 7302 (toll-free within North America)\r\n+1 408 525 6532 (International direct-dial)\r\nNon-emergency Support:\r\nEmail: psirt@cisco.com\r\nSupport requests that are received via e-mail are typically acknowledged within 48 hours.",
"issuing_authority": "Cisco product security incident response is the responsibility of the Cisco Product Security Incident Response Team (PSIRT). The Cisco PSIRT is a dedicated, global team that manages the receipt, investigation, and public reporting of security vulnerability information that is related to Cisco products and networks. The on-call Cisco PSIRT works 24x7 with Cisco customers, independent security researchers, consultants, industry organizations, and other vendors to identify possible security issues with Cisco products and networks.\r\nMore information can be found in Cisco Security Vulnerability Policy available at https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html",
"name": "Cisco",
"namespace": "https://wwww.cisco.com"
},
"references": [
{
"category": "self",
"summary": "Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos"
},
{
"category": "external",
"summary": "Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682"
},
{
"category": "external",
"summary": "Cisco Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
},
{
"category": "external",
"summary": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos",
"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-qos"
},
{
"category": "external",
"summary": "Cisco Event Response: March 2018 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication",
"url": "https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-66682"
},
{
"category": "external",
"summary": "Cisco IOS and NX-OS Software Reference Guide",
"url": "https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html"
},
{
"category": "external",
"summary": "Cisco IOS and NX-OS Software Reference Guide",
"url": "https://www.cisco.com/c/en/us/about/security-center/ios-nx-os-reference-guide.html"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html",
"url": "https://www.cisco.com/c/en/us/about/security-center/copp-best-practices.html"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html",
"url": "https://www.cisco.com/c/en/us/products/end-user-license-agreement.html"
},
{
"category": "external",
"summary": "Cisco Security Advisories and Alerts page",
"url": "https://www.cisco.com/go/psirt"
},
{
"category": "external",
"summary": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html",
"url": "https://www.cisco.com/c/en/us/support/web/tsd-cisco-worldwide-contacts.html"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS Software Checker",
"url": "https://sec.cloudapps.cisco.com/security/center/softwarechecker.x"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS XE 2 Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/2/release/notes/rnasr21/rnasr21_gen.html#wp3000032"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS XE 3S Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/ios/ios_xe/3/release/notes/asr1k_rn_3s_rel_notes/asr1k_rn_3s_sys_req.html#wp3069754"
},
{
"category": "external",
"summary": "Cisco\u0026nbsp;IOS XE 3SG Release Notes",
"url": "https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/release/note/OL_24726.html#pgfId-2570252"
},
{
"category": "external",
"summary": "Security Vulnerability Policy",
"url": "https://sec.cloudapps.cisco.com/security/center/resources/security_vulnerability_policy.html"
}
],
"title": "Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability",
"tracking": {
"current_release_date": "2018-04-27T21:15:00+00:00",
"generator": {
"date": "2022-09-03T03:07:23+00:00",
"engine": {
"name": "TVCE"
}
},
"id": "cisco-sa-20180328-qos",
"initial_release_date": "2018-03-28T16:00:00+00:00",
"revision_history": [
{
"date": "2018-03-28T14:50:39+00:00",
"number": "1.0.0",
"summary": "Initial public release."
},
{
"date": "2018-04-12T16:43:28+00:00",
"number": "1.1.0",
"summary": "Updated Workarounds section with an updated CoPP policy that includes an additional Access-List Entry addressing fragmented packets that may have caused issues when integrated into existing CoPP policies; Alternative Policy Map for platforms that do not support the deny keyword added."
},
{
"date": "2018-04-13T15:36:54+00:00",
"number": "1.2.0",
"summary": "Fixed typos in the workarounds section; added comments to explain what the access-control lists are doing."
},
{
"date": "2018-04-26T19:43:27+00:00",
"number": "1.3.0",
"summary": "Updated metadata."
},
{
"date": "2018-04-27T21:15:15+00:00",
"number": "1.4.0",
"summary": "Updated to indicate that some Cisco platforms may not contain the required features to implement the workaround for this vulnerability. Added an alternative command to identify listening ports. Addressed spelling error."
}
],
"status": "final",
"version": "1.4.0"
}
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},
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},
{
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{
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],
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],
"category": "product_family",
"name": "Cisco IOS XE Software"
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],
"category": "vendor",
"name": "Cisco"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2018-0151",
"ids": [
{
"system_name": "Cisco Bug ID",
"text": "CSCvf73881"
}
],
"notes": [
{
"category": "other",
"text": "Complete.",
"title": "Affected Product Comprehensiveness"
}
],
"product_status": {
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"CSAFPID-200487",
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"CSAFPID-204822",
"CSAFPID-204830",
"CSAFPID-204901",
"CSAFPID-205516",
"CSAFPID-205517",
"CSAFPID-209102",
"CSAFPID-209103",
"CSAFPID-209104",
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"CSAFPID-209106",
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"CSAFPID-209113",
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"CSAFPID-211984",
"CSAFPID-212118",
"CSAFPID-212127",
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"CSAFPID-214480",
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"CSAFPID-216962",
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"CSAFPID-223085",
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"CSAFPID-212411",
"CSAFPID-212412",
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"CSAFPID-213100",
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"CSAFPID-217256",
"CSAFPID-217257",
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"CSAFPID-217266",
"CSAFPID-217267",
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"CSAFPID-220517",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225784",
"CSAFPID-225832",
"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187"
]
},
"release_date": "2018-03-28T16:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"details": "Cisco has released software updates that address this vulnerability.",
"product_ids": [
"CSAFPID-206178",
"CSAFPID-206180",
"CSAFPID-206181",
"CSAFPID-206191",
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"CSAFPID-206193",
"CSAFPID-210079",
"CSAFPID-210081",
"CSAFPID-212268",
"CSAFPID-212408",
"CSAFPID-212411",
"CSAFPID-212412",
"CSAFPID-212436",
"CSAFPID-213100",
"CSAFPID-213476",
"CSAFPID-213477",
"CSAFPID-213478",
"CSAFPID-213635",
"CSAFPID-213700",
"CSAFPID-213776",
"CSAFPID-213777",
"CSAFPID-213778",
"CSAFPID-213779",
"CSAFPID-213809",
"CSAFPID-213960",
"CSAFPID-214051",
"CSAFPID-214993",
"CSAFPID-217234",
"CSAFPID-217253",
"CSAFPID-217255",
"CSAFPID-217256",
"CSAFPID-217257",
"CSAFPID-217259",
"CSAFPID-217264",
"CSAFPID-217265",
"CSAFPID-217266",
"CSAFPID-217267",
"CSAFPID-217268",
"CSAFPID-217270",
"CSAFPID-217271",
"CSAFPID-217272",
"CSAFPID-217273",
"CSAFPID-217276",
"CSAFPID-218901",
"CSAFPID-220517",
"CSAFPID-220802",
"CSAFPID-220993",
"CSAFPID-222257",
"CSAFPID-222693",
"CSAFPID-222694",
"CSAFPID-222711",
"CSAFPID-222925",
"CSAFPID-222942",
"CSAFPID-223018",
"CSAFPID-223019",
"CSAFPID-223241",
"CSAFPID-223252",
"CSAFPID-224424",
"CSAFPID-224702",
"CSAFPID-225099",
"CSAFPID-225168",
"CSAFPID-225359",
"CSAFPID-225466",
"CSAFPID-225784",
"CSAFPID-225832",
"CSAFPID-226078",
"CSAFPID-226160",
"CSAFPID-226330",
"CSAFPID-226354",
"CSAFPID-227556",
"CSAFPID-228193",
"CSAFPID-228194",
"CSAFPID-229124",
"CSAFPID-229187",
"CSAFPID-230302",
"CSAFPID-230303",
"CSAFPID-231187",
"CSAFPID-196322",
"CSAFPID-197477",
"CSAFPID-200487",
"CSAFPID-200509",
"CSAFPID-204281",
"CSAFPID-204822",
"CSAFPID-204830",
"CSAFPID-204901",
"CSAFPID-205516",
"CSAFPID-205517",
"CSAFPID-209102",
"CSAFPID-209103",
"CSAFPID-209104",
"CSAFPID-209105",
"CSAFPID-209106",
"CSAFPID-209107",
"CSAFPID-209110",
"CSAFPID-209111",
"CSAFPID-209112",
"CSAFPID-209113",
"CSAFPID-209115",
"CSAFPID-209360",
"CSAFPID-209632",
"CSAFPID-209936",
"CSAFPID-210129",
"CSAFPID-211408",
"CSAFPID-211603",
"CSAFPID-211751",
"CSAFPID-211825",
"CSAFPID-211984",
"CSAFPID-212118",
"CSAFPID-212127",
"CSAFPID-212321",
"CSAFPID-212407",
"CSAFPID-212445",
"CSAFPID-213000",
"CSAFPID-213001",
"CSAFPID-213034",
"CSAFPID-213086",
"CSAFPID-213594",
"CSAFPID-213633",
"CSAFPID-213789",
"CSAFPID-213795",
"CSAFPID-214074",
"CSAFPID-214161",
"CSAFPID-214479",
"CSAFPID-214480",
"CSAFPID-214938",
"CSAFPID-216215",
"CSAFPID-216239",
"CSAFPID-216419",
"CSAFPID-216577",
"CSAFPID-216961",
"CSAFPID-216962",
"CSAFPID-218996",
"CSAFPID-218997",
"CSAFPID-220396",
"CSAFPID-220521",
"CSAFPID-220522",
"CSAFPID-221093",
"CSAFPID-222931",
"CSAFPID-222988",
"CSAFPID-222989",
"CSAFPID-223085",
"CSAFPID-223189",
"CSAFPID-224327",
"CSAFPID-224443",
"CSAFPID-224566",
"CSAFPID-225155",
"CSAFPID-225407",
"CSAFPID-225667",
"CSAFPID-226076",
"CSAFPID-226165",
"CSAFPID-227172",
"CSAFPID-227612",
"CSAFPID-227613",
"CSAFPID-227914",
"CSAFPID-228142",
"CSAFPID-228191",
"CSAFPID-228195",
"CSAFPID-228693",
"CSAFPID-228959",
"CSAFPID-230609",
"CSAFPID-230611",
"CSAFPID-230612",
"CSAFPID-230613",
"CSAFPID-230614",
"CSAFPID-230616",
"CSAFPID-230624",
"CSAFPID-232093",
"CSAFPID-236297",
"CSAFPID-254081",
"CSAFPID-262382",
"CSAFPID-275327",
"CSAFPID-278136"
],
"url": "https://software.cisco.com"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.0"
},
"products": [
"CSAFPID-196322",
"CSAFPID-197477",
"CSAFPID-200487",
"CSAFPID-200509",
"CSAFPID-204281",
"CSAFPID-204822",
"CSAFPID-204830",
"CSAFPID-204901",
"CSAFPID-205516",
"CSAFPID-205517",
"CSAFPID-209102",
"CSAFPID-209103",
"CSAFPID-209104",
"CSAFPID-209105",
"CSAFPID-209106",
"CSAFPID-209107",
"CSAFPID-209110",
"CSAFPID-209111",
"CSAFPID-209112",
"CSAFPID-209113",
"CSAFPID-209115",
"CSAFPID-209360",
"CSAFPID-209632",
"CSAFPID-209936",
"CSAFPID-210129",
"CSAFPID-211408",
"CSAFPID-211603",
"CSAFPID-211751",
"CSAFPID-211825",
"CSAFPID-211984",
"CSAFPID-212118",
"CSAFPID-212127",
"CSAFPID-212321",
"CSAFPID-212407",
"CSAFPID-212445",
"CSAFPID-213000",
"CSAFPID-213001",
"CSAFPID-213034",
"CSAFPID-213086",
"CSAFPID-213594",
"CSAFPID-213633",
"CSAFPID-213789",
"CSAFPID-213795",
"CSAFPID-214074",
"CSAFPID-214161",
"CSAFPID-214479",
"CSAFPID-214480",
"CSAFPID-214938",
"CSAFPID-216215",
"CSAFPID-216239",
"CSAFPID-216419",
"CSAFPID-216577",
"CSAFPID-216961",
"CSAFPID-216962",
"CSAFPID-218996",
"CSAFPID-218997",
"CSAFPID-220396",
"CSAFPID-220521",
"CSAFPID-220522",
"CSAFPID-221093",
"CSAFPID-222931",
"CSAFPID-222988",
"CSAFPID-222989",
"CSAFPID-223085",
"CSAFPID-223189",
"CSAFPID-224327",
"CSAFPID-224443",
"CSAFPID-224566",
"CSAFPID-225155",
"CSAFPID-225407",
"CSAFPID-225667",
"CSAFPID-226076",
"CSAFPID-226165",
"CSAFPID-227172",
"CSAFPID-227612",
"CSAFPID-227613",
"CSAFPID-227914",
"CSAFPID-228142",
"CSAFPID-228191",
"CSAFPID-228195",
"CSAFPID-228693",
"CSAFPID-228959",
"CSAFPID-230609",
"CSAFPID-230611",
"CSAFPID-230612",
"CSAFPID-230613",
"CSAFPID-230614",
"CSAFPID-230616",
"CSAFPID-230624",
"CSAFPID-232093",
"CSAFPID-236297",
"CSAFPID-254081",
"CSAFPID-262382",
"CSAFPID-275327",
"CSAFPID-278136"
]
}
],
"title": "Cisco IOS and IOS XE Software Quality of Service Remote Code Execution Vulnerability"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.