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Cisco Security Advisory

Multiple Vulnerabilities in Cisco TelePresence Manager

Advisory ID: cisco-sa-20110223-telepresence-ctsman

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctsman

Revision 1.0

For Public Release 2011 February 23 16:00  UTC (GMT)

Related Resources:

View related Applied Mitigation Bulletin

Summary

Multiple vulnerabilities exist in the Cisco TelePresence Manager. This security advisory outlines the details of the following vulnerabilities:

  • Simple Object Access Protocol (SOAP) Authentication Bypass
  • Java Remote Method Invocation (RMI) Command Injection
  • Cisco Discovery Protocol Remote Code Execution

Duplicate Issue Identification in Other Cisco TelePresence Advisories

The Cisco Discovery Protocol remote code execution vulnerability affects Cisco TelePresence endpoints, Manager, Multipoint Switch, and Recording Server. The details about how the defect relates to each component are covered in each associated advisory. The Cisco bug IDs for these defects are as follows:

  • Cisco TelePresence endpoint devices - CSCtd75754
  • Cisco TelePresence Manager - CSCtd75761
  • Cisco TelePresence Multipoint Switch - CSCtd75766
  • Cisco TelePresence Recording Server - CSCtd75769

This advisory is posted at http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctsman.

Affected Products

These vulnerabilities affect the Cisco TelePresence Manager. Releases of Cisco TelePresence Manager software prior to 1.7.0 may be affected by one or more of the vulnerabilities listed in this advisory.

The following table provides information pertaining to affected software releases:

Description

Cisco Bug ID

Affected Software Releases

SOAP Authentication Bypass

CSCtc59562

1.2.x, 1.3.x, 1.4.x, 1.5.x, 1.6.x

Java RMI Command Injection

CSCtf9085

1.2.x, 1.3.x, 1.4.x, 1.5.x, 1.6.x

Cisco Discovery Protocol Remote Code Execution

CSCtd75761

1.2.x, 1.3.x, 1.4.x, 1.5.x, 1.6.2

Vulnerable Products

Cisco TelePresence Manager devices that are running an affected version of software are affected.

To determine the current version of software that is running on the Cisco TelePresence Manager, establish an SSH connection to the device and issue the show version active and the show version inactive commands. 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: 1.6.0.0-342

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

In the preceding example, the system has versions 1.6.0 and 1.7.0 loaded on the device, and version 1.7.0 is currently active. A device is affected only by vulnerabilities that are 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.

This security advisory describes multiple, distinct vulnerabilities in the Cisco TelePresence Manager. These vulnerabilities are independent of each other.

SOAP Authentication Bypass

An authentication bypass vulnerability exists that could allow a remote, unauthenticated attacker to invoke arbitrary methods that are available via the SOAP interface on the Cisco TelePresence Manager. The attacker would need the ability to submit a malformed SOAP request that is designed to trigger the vulnerability to the affected device on TCP port 8080 or 8443.

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

  • Cisco TelePresence Manager: CSCtc59562 ( registered customers only) has been assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2011-0380.

Java RMI Command Injection

A command injection vulnerability exists in the Java RMI interface that is exposed on the Cisco TelePresence Manager. The vulnerability could allow an unauthenticated, remote attacker to perform a number of actions on the device with elevated privileges. The attacker would need to be able to submit a crafted request to the affected device on TCP port 1100 or 32000.

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

  • Cisco TelePresence Manager: CSCtf97085 ( registered customers only) has been assigned the CVE identifier CVE-2011-0381.

Cisco Discovery Protocol Remote Code Execution

A remote code execution vulnerability exists in Cisco TelePresence Manager devices. This vulnerability could allow an unauthenticated, adjacent attacker to trigger a buffer overflow condition. The attacker would need the ability to submit a malicious Cisco Discovery Protocol packet to the affected system to exploit this vulnerability.

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

  • Cisco TelePresence Manager: CSCtd75761 ( registered customers only) has been assigned the CVE identifier CVE-2011-0379.

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 .

CSCtc59562 - SOAP Authentication Bypass

Calculate the environmental score of CSCtc59562

CVSS Base Score - 7.5

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Partial

Partial

Partial

CVSS Temporal Score - 6.2

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCtf97085 - Java RMI Command Injection

Calculate the environmental score of CSCtf97085

CVSS Base Score - 10.0

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Network

Low

None

Complete

Complete

Complete

CVSS Temporal Score - 8.3

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

CSCtd75761 - Cisco Discovery Protocol Remote Code Execution

Calculate the environmental score of CSCtd75761

CVSS Base Score - 7.9

Access Vector

Access Complexity

Authentication

Confidentiality Impact

Integrity Impact

Availability Impact

Adjacent Network

Medium

None

Complete

Complete

Complete

CVSS Temporal Score - 6.5

Exploitability

Remediation Level

Report Confidence

Functional

Official-Fix

Confirmed

Impact

Successful exploitation of the SOAP Authentication Bypass vulnerability (CSCtc59562) could allow an unauthenticated, remote attacker to issue SOAP requests to the affected system. This could allow the attacker to perform multiple actions that should be restricted to authenticated users.

Successful exploitation of the Java RMI Command Injection Vulnerability (CSCtf97085) could allow an unauthenticated, remote attacker to take complete control of the affected device.

Successful exploitation of the Cisco Discovery Protocol Remote Code Execution vulnerability (CSCtd75761) could allow an unauthenticated, adjacent attacker to take complete control of the affected system.

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 the security vulnerabilities identified in this advisory as well as other vulnerabilities that are not security related. Cisco recommends upgrading to a release equal to or later than the release in the Recommended Releases column of the table.

Vulnerability

Bug ID

Component

First Fixed Version

Recommended Release

SOAP Authentication Bypass

CSCtc59562

Cisco TelePresence Manager

1.7.0

1.7.1

Java RMI Command Injection

CSCtf97085

Cisco TelePresence Manager

1.7.0

1.7.1

Cisco Discovery Protocol Remote Code Execution

CSCtd75761

Cisco TelePresence Manager

1.7.0

1.7.1

It is recommended that all components of the Cisco TelePresence solution be upgraded to release 1.7.1 or greater.


Workarounds

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

Additional mitigations that can be deployed on Cisco devices in the network are available in the Cisco Applied Intelligence companion document for this advisory: http://tools.cisco.com/security/center/content/CiscoAppliedMitigationBulletin/cisco-amb-20110223-telepresence

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 in this 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://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20110223-telepresence-ctsman

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 1.0

2011-February-23

Initial 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/web/about/security/psirt/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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