Products & Services
Support

Product Categories


Popular Downloads


Manage Software

How to Buy

For Home

Linksys Products Store
Linksys is now part of Belkin
Products for everyone

All Ordering Options

Training & Events Partners
Guest

Vulnerability Alert

Cisco AnyConnect Secure Mobility Client WebLaunch Input Processing Arbitrary Code Execution Vulnerability

 
Threat Type:CWE-94: Code Injection
IntelliShield ID:26196
Version:2
First Published:2012 June 20 17:17 GMT
Last Published:2012 August 24 20:41 GMT
Port: Not available
CVE:CVE-2012-2493
BugTraq ID:54107
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.3 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.7
 
 
Version Summary:Additional technical information to describe the Cisco AnyConnect Secure Mobility Client WebLaunch input processing arbitrary code execution vulnerability is available.
 
 
Description
Cisco AnyConnect Secure Mobility Client contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.

The vulnerability is due to insufficient validation of input by the Cisco AnyConnect Secure Mobility Client WebLaunch component. An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to view a malicious website. If successful, the attacker could execute arbitrary code on the system.

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

 
Warning Indicators
Cisco AnyConnect Secure Mobility Client versions prior to 2.5 MR6 and 3.0 MR8 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.
 
Vendor Announcements
Cisco released a security advisory for bug ID CSCtw47523 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 a targeted user. If the user holds elevated privileges, the attacker could completely compromise the system.
 
Technical Information
The vulnerability is due to insufficient signature checks that are performed by the Cisco AnyConnect VPN Client. When the affected software is invoked through the ActiveX control, the Cisco AnyConnect VPN Client downloads and verifies that vpndownloader.exe has been signed by Cisco. The Cisco AnyConnect VPN Client then runs and downloads additional configuration files that are used to download executable files. These executable files are not checked for valid certificates and automatically run after downloading on the system.

An unauthenticated, remote attacker could exploit this vulnerability by convincing a user to visit a malicious web page. When visited, the web page could download crafted executable files, which run on the user's system as soon as the download completes, triggering the execution of arbitrary code on the targeted system.
 
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
 

Version 1, June 20, 2012, 1:17 PM: Cisco AnyConnect Secure Mobility Client contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.



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

Primary Products:
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:
N/A




Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service. This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.


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.
Powered by  IntelliShield