Vulnerability Alert

Cisco Unified Computing System Central Software DOM-Based Cross-Site Scripting Vulnerability

 
Threat Type:CWE-79: Cross-Site Scripting (XSS)
IntelliShield ID:29109
Version:1
First Published:2013 April 29 19:32 GMT
Last Published:2013 April 29 19:32 GMT
Port: Not available
CVE:CVE-2013-1198
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.7
 
Version Summary:Cisco Unified Computing System Central Software contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks on a targeted system. Updates are available.
 
 
Description
Cisco Unified Computing System Central Software contains a vulnerability that could allow an unauthenticated, remote attacker to conduct cross-site scripting attacks.

The vulnerability exists because the affected software fails to perform sufficient validation and sanitation of user-supplied input when processing crafted URLs. An unauthenticated, remote attacker could exploit the vulnerability by convincing a user to follow a malicious link. A successful exploit could allow the attacker to execute arbitrary script code in the context of the affected site and allow the attacker to access sensitive browser-based information.

Cisco has confirmed the vulnerability in a security notice and has released software updates.
 
Warning Indicators
Cisco Unified Computing System Central Software version 1.0 is affected.
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a link that directs a user to a malicious site and use misleading language or instructions in an attempt to persuade a user to follow the malicious link.

For additional information about cross-site scripting attacks and potential methods of mitigation, see the Cisco Applied Mitigation Bulletin Understanding Cross-Site Scripting (XSS) Threat Vectors.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
 
Vendor Announcements
Cisco has released a security notice for bug ID CSCud15430 at the following link: CVE-2013-1198
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary script or HTML code in the user's browser in the security context of the affected application. This action could allow the attacker to steal sensitive browser-based information, including authentication cookies and recently submitted data, or to take actions on the site as the affected user.
 
Technical Information
The affected software fails to perform sufficient validation and sanitation of user-supplied input to certain parameters by the load ShockWave Flash (SWF) component when processing crafted URLs before returning the input to the user's browser session. When returned to the browser, the malicious parameters may execute in the security context of the affected site.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to follow a crafted URL that is designed to submit malicious input to the vulnerable script. The script may return the input to the user's browser without proper sanitation and render the input in the security context of the affected site. The attacker could include arbitrary script or HTML code that could allow the attacker to access sensitive browser-based information or execute actions on the site with the privileges of the user.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users should verify that unsolicited links are safe to follow.

Users are advised not to visit websites or follow links that have suspicious characteristics or cannot be verified as safe.

Administrators are advised to monitor affected systems.
 
Patches/Software
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at tac@cisco.com
 
Alert History
 
Initial Release


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
CiscoCisco Unified Computing System Central Software 1.0 Base

Associated Products:
N/A




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LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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