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Vulnerability Alert

Cisco Secure Desktop Arbitrary Code Execution Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:26903
Version:1
First Published:2012 September 19 16:17 GMT
Last Published:2012 September 19 16:17 GMT
Port: 443, 80
CVE:CVE-2012-4655
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.7
 
Version Summary:Cisco Secure Desktop contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
 
 
Description
Cisco Secure Desktop contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to insufficient input validation of the ActiveX control and Java components that perform the WebLaunch functionality of the affected software. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious web page. If successful, the attacker could execute arbitrary code on the system with the privileges of the user.

Cisco has confirmed this vulnerability and released software updates.
 
Warning Indicators
Cisco Secure Desktop versions prior to 3.6.6020 are vulnerable on Microsoft Windows, Linux, and Apple Mac OS X platforms.
 
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 to persuade the user to follow the provided link.

The attack vector for exploitation is through HTTP and HTTPS IP version 4 and IP version 6 packets using TCP ports 80 and 443.

Customers who do not have the affected software on their networks can trigger this vulnerability using ActiveX controls or Java applets that have been signed by Cisco.

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 advisory for bug IDs CSCtz76128 and CSCtz78204 at the following link: cisco-sa-20120620-ac
 
Impact
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system with the privileges of the user. If the user holds elevated privileges, the attacker could completely compromise the system.
 
Technical Information
The vulnerability is due to insufficient input validation of the ActiveX control and Java components that perform the WebLaunch functionality of the affected software.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious web page. If successful, the attacker could execute malicious code in the vulnerable ActiveX control or Java applet with the privileges of the user's web browser session.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users are advised not to open e-mail messages from suspicious or unrecognized sources. If users cannot verify that links or attachments included in e-mail messages are safe, they are advised not to open them.

Administrators are advised to monitor affected systems.

Administrators running the affected software on Microsoft Windows platforms may consider blacklisting the vulnerable ActiveX control class identifiers (CLSIDs) by setting a kill bit. Microsoft has released a security advisory for additional details on performing this action at the following link: ActiveX Kill Bits 2736233

The Cisco Applied Intelligence team has created the following companion document to guide administrators in identifying and mitigating attempts to exploit this vulnerability prior to applying updated software: cisco-amb-20120620-ac
 
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 Secure Desktop 3.1 .0.31, .1.45, Base, .1 | 3.2 .0.136, .1.103, .1.126, Base | 3.3 .0.118, .0.151, Base | 3.4 .0373, .1108, Base, .2048 | 3.5 Base, .841, .1077, .2001, .2003, .2008 | 3.6 Base, .181, .185, .1001, .2002, .3002, .4021, .5005

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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