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November 2007

3462 - Cisco Security Response: Cisco Unified MeetingPlace XSS Vulnerability

ID: 3462
Date: 07/11/2007

Title: 3462 - Cisco Security Response: Cisco Unified MeetingPlace XSS Vulnerability
Platform level affected:Net Application - Enterprise
Hardware components affected:Other
Specific operating systems components affected: Other
Net-enabled software: Web Server
Other software: Web Browser
Remediation Summary:Other
Vendors affected:Cisco
Applications affected:MeetingPlace
Adversity source: Unknown
Attack Vector: Vulnerability exploitation
Virulence: User Interaction
Warning Status: Imminent
Potential Damage: Remote execution/modification
Possible Duration: Unknown
Availability of fix: Available
Type of fix: Workaround
Source: Cisco
Reliability of source: Trusted
Source URL: http://www.cisco.com/warp/public/707/cisco-sr-20071107-mp.shtml
Abstract: Description of a cross-site scripting (XSS) vulnerability in Cisco Unified MeetingPlace Web Conferencing

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Cisco Security Response: Cisco Unified MeetingPlace XSS Vulnerability

Document ID: 99855

http://www.cisco.com/warp/public/707/cisco-sr-20071107-mp.shtml

Revision 1.0

For Public Release 2007 November 07 1300 UTC (GMT)

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Cisco Response
==============

This is the Cisco PSIRT response to an issue that was discovered and reported to Cisco by Joren McReynolds regarding a cross-site scripting (XSS) vulnerability in Cisco Unified MeetingPlace Web Conferencing.

The original report is available at the following link:
http://secunia.com/advisories/26462/

We greatly appreciate the opportunity to work with researchers on security vulnerabilities and welcome the opportunity to review and assist in product reports.

This vulnerability is documented in Cisco bug ID CSCsk17122.

This Cisco Security Response is posted at the following link:

http://www.cisco.com/warp/public/707/cisco-sr-20071107-mp.shtml.

This vulnerability has been assigned CVE ID CVE-2007-5581.

Additional Information
======================

Cisco Unified MeetingPlace Web Conferencing (MeetingPlace) provides real-time collaboration functionality to an organization's intranet and extranet and integrates MeetingPlace with a web server, thus providing users with a browser-based interface. Web Conferencing enables users to schedule and attend conferences, access meeting materials, and collaborate on documents from common web browsers.

MeetingPlace is vulnerable to Cross Site Scripting (XSS) attacks from the login screen. When this XSS vulnerability is exploited, malicious code or script is embedded within the URL and associated with FirstName or LastName parameters.

The malicious code typically takes the form of a script that is embedded in the URL of a link. The malicious code may also be stored on the vulnerable server or a malicious website. An attacker could try to convince an unsuspecting user to follow a malicious link to a vulnerable MeetingPlace server that injects (reflects) the malicious code back to the user's browser.

Workarounds
===========

There are no known workarounds for this vulnerability. Cisco recommends applying a hotfix to address the vulnerability.

+---------------------------------------+
| Affected         |                    |
| software         | Hotfix             |
| versions         |                    |
|------------------+--------------------|
| 5.3 and prior    | Affected, no       |
| versions         | hotfix available   |
|------------------+--------------------|
| 5.4              | 5.4.156.2E         |
|------------------+--------------------|
| 6.0              | 6.0.244.1A         |
+---------------------------------------+

For additional information on XSS attacks and the methods used to exploit these vulnerabilities, please refer to the Cisco Applied Intelligence Response "Understanding Cross-Site Scripting (XSS) Threat Vectors", which is available at the following link:

http://www.cisco.com/warp/public/707/cisco-air-20060922-understanding-xss.shtml

Additional Information
======================

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.

Revision History
================

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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This advisory contains information released by the original author. Some of the information may have changed since it was released. If the issue affects you, it may be prudent to retrieve the advisory from the site of the original source to ensure that you receive the most current information concerning that problem. Reference to any specific commercial product, process, or service by trade name, trademark manufacturer, or otherwise, does not constitute or imply its endorsement, recommendation, or favouring by CPNI.

The views and opinions of authors expressed within this notice shall not be used for advertising or product endorsement purposes. CPNI shall not accept responsibility for any errors or omissions contained within this advisory. In particular, they shall not be liable for any loss or damage whatsoever, arising from or in connection with the usage of information contained within this advisory.

CSIRTUK is a member of the Forum of Incident Response and Security Teams (FIRST) and has contacts with other international Incident Response Teams (IRTs) in order to foster cooperation and coordination in incident prevention, to prompt rapid reaction to incidents, and to promote information sharing amongst its members and the community at large.