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Vulnerability Alert

Cisco AnyConnect Secure Mobility Client and Secure Desktop WebLaunch Software Downgrade Vulnerability

 
Threat Type:
IntelliShield ID:26198
Version:1
First Published:2012 June 20 17:19 GMT
Last Published:2012 June 20 17:19 GMT
Port: Not available
CVE:CVE-2012-2495
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:4.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:3.6
Related Resources:
View related Security Advisory
 
 
Version Summary:

Cisco AnyConnect Secure Mobility Client and Secure Desktop contain a vulnerability that could allow an unauthenticated, remote attacker to to replace software components. Updates are available.

 
 
Description

Cisco AnyConnect Secure Mobility Client and Secure Desktop contain a vulnerability that could allow an unauthenticated, remote attacker to replace software components on?a targeted system.

The vulnerability exists because the affected software performs insufficient validation of user-supplied input. An unauthenticated, remote attacker could exploit the vulnerability by convincing the user to view a malicious website. If successful, the attacker could cause the affected software to be downgraded to a prior version.

Cisco has confirmed the vulnerability in a security advisory and released software updates.

 
Warning Indicators

Cisco AnyConnect Secure Mobility Client versions prior to 3.0 MR8 and Cisco Secure Desktop versions prior to 3.6.6020 are vulnerable.

 
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 execution of the ActiveX control of java applet may require little or no user interaction, depending on the user's browser configuration, because the affected ActiveX controls and Java applets are cryptographically signed by Cisco.

Cisco has corrected this vulnerability by changing the way the WebLaunch component initiation handles downloaded signed code.

Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.

 
Vendor Announcements

Cisco released a security advisory for BugID CSCtx74235 at the following link: cisco-sa-20120620-ac

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to replace software components with an older version, affecting application functionality or introducing additional vulnerabilities.

 
Technical Information

The vulnerability is due to insufficient validation of input by the Cisco AnyConnect Secure Mobility Client and Secure Desktop WebLaunch ActiveX and Java components.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious website. The processing of input that is supplied by the malicious website could cause the software to download and install an older but signed version of the affected software.? The installation of an older version of the software could invalidate current configurations, change functionality, and introduce vulnerabilities that may be present in older versions of the software.

 
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.

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 3.0 Base | 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
CiscoCisco AnyConnect Secure Mobility Client 2.5 Base, .0217, .2006, .2010, .2011, .2014, .2017, .2018, .2019, .3041, .3046, .3051, .3054, .3055 | 3.0 Base, .0629, .1047, .2052, .3050, .3054, .4235, .5075, .5080

Associated Products:
CiscoCisco Secure Desktop 3.1 | 3.2 | 3.3 | 3.4 | 3.5 | 3.6
CiscoCisco AnyConnect Secure Mobility Client 3.0




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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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