Cisco Security Advisory

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)

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

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.
  

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 .

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.

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.

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

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

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 Using Third-Party Support Organizations

Customers Without Service Contracts

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.

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.

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.

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.