Vulnerability Alert

Cisco Wireless LAN Controllers HTTP Profiling Remote Code Execution Vulnerability

 
Threat Type:CWE-399: Resource Management Errors
IntelliShield ID:27903
Version:1
First Published:2013 January 23 16:18 GMT
Last Published:2013 January 23 16:18 GMT
Port: Not available
CVE:CVE-2013-1104
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Moderate Damage
CVSS Base:9.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:7.4
 
Version Summary:Cisco Wireless LAN Controller Software contains a vulnerability that could allow an authenticated, remote attacker to execute arbitrary code on an affected device. Updates are available.
 
 
Description
Cisco Wireless LAN Controller (WLC) Software contains a vulnerability that could allow an authenticated, remote attacker to execute arbitrary code on an affected device.

The vulnerability is due to improper sanitization of user-supplied input processed by the affected software. An authenticated, remote attacker could exploit this vulnerability by sending a crafted UserAgent string to the targeted system. The processing of the crafted string could allow the attacker to execute arbitrary code on the system, which could result in a complete system compromise.

Cisco has confirmed the vulnerability in a security advisory and released updated software.
 
Warning Indicators
Cisco WLC Software version 7.3.101.0 is vulnerable while running on the Cisco WLC family of products. A list of the specific products is in the "Vulnerable Products" section of the PSIRT advisory.
 
IntelliShield Analysis
To exploit this vulnerability, an attacker would need to authenticate to the affected device to send crafted UserAgent strings. The device would likely reside on an internal, secure network. This access requirement may make successful exploitation difficult.

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 Cisco bug ID CSCuc15636 at the following link: cisco-sa-20130123-wlc
 
Impact
An authenticated, remote attacker could exploit this vulnerability to execute arbitrary code on an affected device. Successful exploitation could result in a complete system compromise of the device.
 
Technical Information
The vulnerability is due to improper sanitization of user-supplied input processed by the affected software when the HTTP Profiling feature is enabled.

An authenticated, remote attacker could exploit this vulnerability by sending a crafted UserAgent string via wired or wireless segments to a targeted system. The processing of the crafted string could allow an attacker to execute arbitrary code on the system.
 
Safeguards
Administrators are advised to apply the available software updates.

Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

Administrators are advised to allow only trusted users to have network access.

Administrators may consider disabling the HTTP Profiling feature in the affected software if this option is not needed.

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 Wireless LAN Controller (WLC) 7.3 .101.0

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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