var-201102-0229
Vulnerability from variot

Cisco TelePresence Multipoint Switch (CTMS) devices with software 1.0.x, 1.1.x, 1.5.x, and 1.6.x allow remote attackers to cause a denial of service (process crash) via a crafted Real-Time Transport Control Protocol (RTCP) UDP packet, aka Bug ID CSCth60993. Multiple denial-of-service vulnerabilities 2. A security-bypass vulnerability 3. An unauthorized-access vulnerability An attacker can exploit these issues to bypass certain security restrictions and cause a denial-of-service condition. Other attacks are also possible. These issues are being tracked by the following Cisco Bug IDs: CSCtf01253 CSCtf97164 CSCth60993 CSCtj44534. The solution provides components such as audio and video spaces, which can provide remote participants with a "face-to-face" virtual meeting room effect. The defect as related to each component is covered in each associated advisory. The defect as related to each component is covered in each associated advisory. The defect as related to each component is covered in each associated advisory. The defect as related to each component is covered in each associated advisory. The output should resemble the following example:

admin: show version active
Active Master Version: 1.7.0.0-471


Active Version Installed Software Options:
No Installed Software Options Found.

admin: show version inactive
Inactive Master Version: 1.6.1.0-336

Inactive Version Installed Software Options:
No Installed Software Options Found.

In the preceding example, the system has versions 1.6.1 and 1.7.0 loaded on the device and version 1.7.0 is currently active. A device is only affected by vulnerabilities in the active software version.

Products Confirmed Not Vulnerable +--------------------------------

No other Cisco products are currently known to be affected by these vulnerabilities

Details

The Cisco TelePresence solution allows for immersive, in-person communication and collaboration over the network with colleagues, prospects, and partners even when they are located in opposite hemispheres.

Unauthenticated Java Servlet Access +----------------------------------

A number of sensitive Java Servlets delivered via a Java Servlet framework in the Cisco Telepresence Multipoint Switch could allow a remote, unauthenticated attacker to perform actions that should be restricted to administrative users only. The attacker would need the ability to submit a crafted request to an affected device on TCP port 80, 443, or 8080.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit these vulnerabilities.

  • CTMS - CSCtf42008 ( registered customers only) has been assigned the CVE identifier CVE-2011-0383.
  • CTMS - CSCtf01253 ( registered customers only) has been assigned the CVE identifier CVE-2011-0384. An unauthenticated, remote attacker could submit a crafted request to an affected device that would allow for the placement of attacker-controlled content in arbitrary locations on the device. The attacker would need the ability to submit a crafted request to an affected device on TCP port 80 or 443.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

  • CTMS - CSCth61065 ( registered customers only) has been assigned the CVE identifier CVE-2011-0385. An unauthenticated, adjacent attacker could exploit the vulnerability by submitting a malicious Cisco Discovery Protocol packet to the affected system. When parsed, the malicious packet may trigger a buffer overflow.

Because Cisco Discovery Protocol works at the data link layer (Layer 2), an attacker must have a way to submit an Ethernet frame directly to an affected device. This may be possible in situations where the affected system is part of a bridged network or connected to a nonpartitioned device such as a network hub.

  • CTMS - CSCtd75766 ( registered customers only) has been assigned the CVE identifier CVE-2011-0379.

Unauthorized Servlet Access +--------------------------

An unauthorized servlet access issue exists in the administrative web interface of Cisco TelePresence Multipoint Switch devices. The attacker would need the ability to submit a crafted request to an affected device on TCP port 80 or 443.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

  • CTMS - CSCtf97164 ( registered customers only) has been assigned the CVE identifier CVE-2011-0387. An unauthenticated, remote attacker could trigger an out-of-memory condition on the servlet host by issuing a series of crafted requests. The attacker would need the ability to communicate to an affected device on TCP port 8999.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

  • CTMS - CSCtg35825 ( registered customers only) has been assigned the CVE identifier CVE-2011-0388. An unauthenticated, remote attacker could send a malicious RTCP packet to a listening RTCP control port to crash the call control process. The attacker would need to have the ability to communicate to an affected device on a UDP port that was randomly selected and negotiated during call setup.

Because the vulnerability is within a UDP-based service, the attacker would not be required to perform a handshake prior to making the crafted request. This could allow the attacker to spoof the source address of an attack.

  • CTMS - CSCth60993 ( registered customers only) has been assigned the CVE identifier CVE-2011-0389. A remote, unauthenticated attacker could send a malicious request to an affected device to trigger a crash of the call geometry process. The attacker would need the ability to communicate to an affected device on TCP port 9000.

An attacker must perform a three-way TCP handshake and establish a valid session to exploit this vulnerability.

  • CTMS - CSCtj44534 ( registered customers only) has been assigned the CVE identifier CVE-2011-0390.

Vulnerability Scoring Details +----------------------------

Cisco has provided 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.

CVSS is a standards-based scoring method that conveys vulnerability severity and helps determine urgency and priority of response.

Cisco has provided a base and temporal score. Customers can then compute environmental scores to assist in determining the impact of the vulnerability in individual networks.

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

  • CSCtf42008 - Unauthenticated Java Servlet Access

CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete

CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCtf01253 - Unauthenticated Java Servlet Access

CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete

CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCth61065 - Unauthenticated Arbitrary File Upload

CVSS Base Score - 10 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete

CVSS Temporal Score - 8.3 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCtd75766 - Cisco Discovery Protocol Remote Code Execution

CVSS Base Score - 7.9 Access Vector - Adjacent Network Access Complexity - Medium Authentication - None Confidentiality Impact - Complete Integrity Impact - Complete Availability Impact - Complete

CVSS Temporal Score - 6.5 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCtf97164 - Unauthorized Servlet Access

CVSS Base Score - 8.0 Access Vector - Network Access Complexity - Low Authentication - Single Confidentiality Impact - Partial Integrity Impact - Partial Availability Impact - Complete

CVSS Temporal Score - 6.6 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCtg35825 - Java RMI Denial of Service

CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete

CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCth60993 - Real-Time Transport Control Protocol Denial of Service

CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete

CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

  • CSCtj44534 - XML-RPC Denial of Service

CVSS Base Score - 7.8 Access Vector - Network Access Complexity - Low Authentication - None Confidentiality Impact - None Integrity Impact - None Availability Impact - Complete

CVSS Temporal Score - 6.4 Exploitability - Functional Remediation Level - Official-Fix Report Confidence - Confirmed

Impact

Successful exploitation of the Unauthenticated Java Servlet (CSCtf42008, CSCtf01253) vulnerabilities could allow an unauthenticated, remote attacker to take complete control of the affected device.

Successful exploitation of the Unauthenticated Arbitrary File Upload (CSCth61065) vulnerability could allow an unauthenticated, remote attacker to place or overwrite arbitrary files on the affected system. This may allow the attacker to gain full control of the affected device.

Successful exploitation of the Cisco Discovery Protocol Remote Code Execution (CSCtd75766) vulnerability could allow an unauthenticated, adjacent attacker to take complete control of the affected system.

Successful exploitation of the Unauthorized Servlet Access (CSCtf97164) vulnerability could allow a remote, authenticated attacker to perform certain actions on the system that should be restricted by the attacker's privilege level.

Successful exploitation of the Java RMI Denial of Service (CSCtg35825) vulnerability could allow an unauthenticated, remote attacker to cause all web-based services to become inaccessible.

Successful exploitation of the XML-RPC Denial of Service (CSCtj44534) vulnerability could allow an unauthenticated, remote attacker to terminate all current calls and potentially cause the device to become unusable for future calls.

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 following Cisco TelePresence System Software table defines a specific defect, the "First Fixed Release", and the "Recommended Release" to resolve all of the security issues identified in this advisory as well as other non-security related issues. Cisco recommends upgrading to a release equal to or later than the release in the Recommended Release column of the table.

Workarounds

There are no device- or system-based workarounds for the identified vulnerabilities.

Additional mitigations that can be deployed on Cisco devices within the network are available in the Cisco Applied Intelligence companion document for this Advisory:

http://www.cisco.com/warp/public/707/cisco-amb-20110223-telepresence.shtml

Obtaining Fixed Software

Cisco has released free software updates that address these vulnerabilities. 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/en/US/docs/general/warranty/English/EU1KEN_.html or as otherwise set forth at Cisco.com Downloads at: http://www.cisco.com/public/sw-center/sw-usingswc.shtml

Do not contact 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 agreements 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 do not hold a Cisco service contract, and customers who purchase through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should acquire 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

Customers should have their product serial number available and be prepared to give the URL of this notice as evidence of entitlement to a free upgrade. Free upgrades for non-contract customers must be requested through the TAC.

Refer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html for additional TAC contact information, including 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 vulnerabilities described in this advisory.

All vulnerabilities identified within this Cisco Security Advisory were discovered internally by Cisco.

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-20110223-telepresence-ctms.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-bulletins@lists.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 | 2011-February-23 | 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.

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    "data": "Cisco TelePresence Multipoint Switch (CTMS) devices with software 1.0.x, 1.1.x, 1.5.x, and 1.6.x allow remote attackers to cause a denial of service (process crash) via a crafted Real-Time Transport Control Protocol (RTCP) UDP packet, aka Bug ID CSCth60993. Multiple denial-of-service vulnerabilities\n2. A security-bypass vulnerability\n3. An unauthorized-access vulnerability\nAn attacker can exploit these issues to bypass certain security restrictions and cause a denial-of-service condition. Other attacks are also possible. \nThese issues are being tracked by the following Cisco Bug IDs:\nCSCtf01253\nCSCtf97164\nCSCth60993\nCSCtj44534. The solution provides components such as audio and video spaces, which can provide remote participants with a \"face-to-face\" virtual meeting room effect. The defect\nas related to each component is covered in each associated advisory. The defect\nas related to each component is covered in each associated advisory. The defect as related to each component\nis covered in each associated advisory. The defect as\nrelated to each component is covered in each associated advisory. The \noutput should resemble the following example:\n\n    admin: show version active\n    Active Master Version: 1.7.0.0-471\n\n\n    Active Version Installed Software Options:\n    No Installed Software Options Found. \n\n    admin: show version inactive\n    Inactive Master Version: 1.6.1.0-336\n\n    Inactive Version Installed Software Options:\n    No Installed Software Options Found. \n\nIn the preceding example, the system has versions 1.6.1 and 1.7.0\nloaded on the device and version 1.7.0 is currently active. A device\nis only affected by vulnerabilities in the active software version. \n\nProducts Confirmed Not Vulnerable\n+--------------------------------\n\nNo other Cisco products are currently known to be affected by these\nvulnerabilities\n\nDetails\n=======\n\nThe Cisco TelePresence solution allows for immersive, in-person\ncommunication and collaboration over the network with colleagues,\nprospects, and partners even when they are located in opposite\nhemispheres. \n\nUnauthenticated Java Servlet Access\n+----------------------------------\n\nA number of sensitive Java Servlets delivered via a Java Servlet\nframework in the Cisco Telepresence Multipoint Switch could allow a\nremote, unauthenticated attacker to perform actions that should be\nrestricted to administrative users only. The attacker would need the\nability to submit a crafted request to an affected device on TCP port\n80, 443, or 8080. \n\nAn attacker must perform a three-way TCP handshake and establish a\nvalid session to exploit these vulnerabilities. \n\n  * CTMS - CSCtf42008 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0383. \n  * CTMS - CSCtf01253 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0384. An\nunauthenticated, remote attacker could submit a crafted request to an\naffected device that would allow for the placement of\nattacker-controlled content in arbitrary locations on the device. The\nattacker would need the ability to submit a crafted request to an\naffected device on TCP port 80 or 443. \n\nAn attacker must perform a three-way TCP handshake and establish a\nvalid session to exploit this vulnerability. \n\n  * CTMS - CSCth61065 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0385. An unauthenticated, adjacent attacker\ncould exploit the vulnerability by submitting a malicious Cisco\nDiscovery Protocol packet to the affected system. When parsed, the\nmalicious packet may trigger a buffer overflow. \n\nBecause Cisco Discovery Protocol works at the data link layer (Layer\n2), an attacker must have a way to submit an Ethernet frame directly\nto an affected device. This may be possible in situations where the\naffected system is part of a bridged network or connected to a\nnonpartitioned device such as a network hub. \n\n  * CTMS - CSCtd75766 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0379. \n\nUnauthorized Servlet Access\n+--------------------------\n\nAn unauthorized servlet access issue exists in the administrative web\ninterface of Cisco TelePresence Multipoint Switch devices. The\nattacker would need the ability to submit a crafted request to an\naffected device on TCP port 80 or 443. \n\nAn attacker must perform a three-way TCP handshake and establish a\nvalid session to exploit this vulnerability. \n\n  * CTMS - CSCtf97164 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0387. An\nunauthenticated, remote attacker could trigger an out-of-memory\ncondition on the servlet host by issuing a series of crafted\nrequests. The attacker would need the ability to communicate to an\naffected device on TCP port 8999. \n\nAn attacker must perform a three-way TCP handshake and establish a\nvalid session to exploit this vulnerability. \n\n  * CTMS - CSCtg35825 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0388. An unauthenticated, remote attacker could send a malicious\nRTCP packet to a listening RTCP control port to crash the call\ncontrol process. The attacker would need to have the ability to\ncommunicate to an affected device on a UDP port that was randomly\nselected and negotiated during call setup. \n\nBecause the vulnerability is within a UDP-based service, the attacker\nwould not be required to perform a handshake prior to making the\ncrafted request. This could allow the attacker to spoof the source\naddress of an attack. \n\n  * CTMS - CSCth60993 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0389. A remote, unauthenticated\nattacker could send a malicious request to an affected device to\ntrigger a crash of the call geometry process. The attacker would need\nthe ability to communicate to an affected device on TCP port 9000. \n\nAn attacker must perform a three-way TCP handshake and establish a\nvalid session to exploit this vulnerability. \n\n  * CTMS - CSCtj44534 ( registered customers only) has been assigned\n    the CVE identifier CVE-2011-0390. \n\nVulnerability Scoring Details\n+----------------------------\n\nCisco has provided 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\nCVSS is a standards-based scoring method that conveys vulnerability\nseverity and helps determine urgency and priority of response. \n\nCisco has provided a base and temporal score. Customers can then\ncompute environmental scores to assist in determining the impact of\nthe vulnerability in individual networks. \n\nCisco has provided an FAQ to answer additional questions regarding\nCVSS at:\n\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:\n\nhttp://intellishield.cisco.com/security/alertmanager/cvss\n\n* CSCtf42008 - Unauthenticated Java Servlet Access\n\nCVSS Base Score - 10\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   Complete\n    Integrity Impact -         Complete\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 8.3\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCtf01253 - Unauthenticated Java Servlet Access\n\nCVSS Base Score - 10\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   Complete\n    Integrity Impact -         Complete\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 8.3\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCth61065 - Unauthenticated Arbitrary File Upload\n\nCVSS Base Score - 10\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   Complete\n    Integrity Impact -         Complete\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 8.3\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCtd75766 - Cisco Discovery Protocol Remote Code Execution\n\nCVSS Base Score - 7.9\n    Access Vector -            Adjacent Network\n    Access Complexity -        Medium\n    Authentication -           None\n    Confidentiality Impact -   Complete\n    Integrity Impact -         Complete\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 6.5\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCtf97164 - Unauthorized Servlet Access\n\nCVSS Base Score - 8.0\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           Single\n    Confidentiality Impact -   Partial\n    Integrity Impact -         Partial\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 6.6\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCtg35825 - Java RMI Denial of Service\n\nCVSS Base Score - 7.8\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   None\n    Integrity Impact -         None\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 6.4\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCth60993 - Real-Time Transport Control Protocol Denial of Service\n\nCVSS Base Score - 7.8\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   None\n    Integrity Impact -         None\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 6.4\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n* CSCtj44534 - XML-RPC Denial of Service\n\nCVSS Base Score - 7.8\n    Access Vector -            Network\n    Access Complexity -        Low\n    Authentication -           None\n    Confidentiality Impact -   None\n    Integrity Impact -         None\n    Availability Impact -      Complete\n\nCVSS Temporal Score - 6.4\n    Exploitability -           Functional\n    Remediation Level -        Official-Fix\n    Report Confidence -        Confirmed\n\n\nImpact\n======\n\nSuccessful exploitation of the Unauthenticated Java Servlet\n(CSCtf42008, CSCtf01253) vulnerabilities could allow an\nunauthenticated, remote attacker to take complete control of the\naffected device. \n\nSuccessful exploitation of the Unauthenticated Arbitrary File Upload\n(CSCth61065) vulnerability could allow an unauthenticated, remote\nattacker to place or overwrite arbitrary files on the affected\nsystem. This may allow the attacker to gain full control of the\naffected device. \n\nSuccessful exploitation of the Cisco Discovery Protocol Remote Code\nExecution (CSCtd75766) vulnerability could allow an unauthenticated,\nadjacent attacker to take complete control of the affected system. \n\nSuccessful exploitation of the Unauthorized Servlet Access\n(CSCtf97164) vulnerability could allow a remote, authenticated\nattacker to perform certain actions on the system that should be\nrestricted by the attacker\u0027s privilege level. \n\nSuccessful exploitation of the Java RMI Denial of Service\n(CSCtg35825) vulnerability could allow an unauthenticated, remote\nattacker to cause all web-based services to become inaccessible. \n\nSuccessful exploitation of the XML-RPC Denial of Service (CSCtj44534)\nvulnerability could allow an unauthenticated, remote attacker to\nterminate all current calls and potentially cause the device to\nbecome unusable for future calls. \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 following Cisco TelePresence System Software table\ndefines a specific defect, the \"First Fixed Release\", and the\n\"Recommended Release\" to resolve all of the security issues\nidentified in this advisory as well as other non-security related\nissues. Cisco recommends upgrading to a release equal to or later\nthan the release in the Recommended Release column of the table. \n\nWorkarounds\n===========\n\nThere are no device- or system-based workarounds for the identified\nvulnerabilities. \n\nAdditional mitigations that can be deployed on Cisco devices within\nthe network are available in the Cisco Applied Intelligence companion\ndocument for this Advisory:\n\nhttp://www.cisco.com/warp/public/707/cisco-amb-20110223-telepresence.shtml\n\nObtaining Fixed Software\n========================\n\nCisco has released free software updates that address these\nvulnerabilities. Prior to deploying software, customers should\nconsult their maintenance provider or check the software for feature\nset compatibility and known issues specific to their environment. \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/en/US/docs/general/warranty/English/EU1KEN_.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 psirt@cisco.com or security-alert@cisco.com for\nsoftware 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.  \nCustomers using Third Party Support Organizations\n+------------------------------------------------\n\nCustomers whose Cisco products are provided or maintained through\nprior or existing agreements 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 do not hold a Cisco\nservice contract, and customers who purchase through third-party\nvendors but are unsuccessful in obtaining fixed software through\ntheir point of sale should acquire 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\nCustomers should have their product serial number available and be\nprepared to give the URL of this notice as evidence of entitlement to\na free upgrade. Free upgrades for non-contract customers must be\nrequested through the TAC. \n\nRefer to http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html\nfor additional TAC contact information, including localized telephone numbers, \nand instructions and e-mail addresses for use in various languages. \n\nExploitation and Public Announcements\n=====================================\n\nThe Cisco PSIRT is not aware of any public announcements or malicious\nuse of the vulnerabilities described in this advisory. \n\nAll vulnerabilities identified within this Cisco Security Advisory\nwere discovered internally by Cisco. \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-20110223-telepresence-ctms.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-bulletins@lists.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      | 2011-February-23 | 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 security notices. \nAll Cisco security advisories are available at http://www.cisco.com/go/psirt. \n\n+--------------------------------------------------------------------\nCopyright 2010-2011 Cisco Systems, Inc. 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