Vulnerability Alert

Cisco Wireless LAN Controller Software Form Post Denial of Service Vulnerability

 
Threat Type:CWE-20: Input Validation
IntelliShield ID:27642
Version:1
First Published:2012 December 13 17:20 GMT
Last Published:2012 December 13 17:20 GMT
Port: Not available
CVE:CVE-2012-5991
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:6.5
 
Version Summary:Cisco Wireless LAN Controller Software contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service condition on a targeted device. Updates are not available.
 
 
Description
Cisco Wireless LAN Controller Software contains a vulnerability that could allow an authenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to insufficient validation of user-supplied input to the affected software. An authenticated, remote attacker could exploit the vulnerability by sending crafted HTTP GET requests to the targeted system. When processed, the malicious requests could cause the vulnerable software terminate abnormally, denying service to legitimate users.

Functional code that exploits the vulnerability is publicly available.

Cisco confirmed the vulnerability in a security bug report; however, software updates are not available.
 
Warning Indicators
Cisco Wireless LAN Controller Software Releases 7.2 and prior are vulnerable.
 
IntelliShield Analysis
Only users who can authenticate to the affected software could exploit the vulnerability. Affected systems typically have restricted access, limiting the potential for exploitation.

A related vulnerability in the affected software could allow an unauthenticated, remote attacker to exploit the vulnerability. However, the exploit relies upon user interaction, and the targeted user must have authenticated access to the affected system.
 
Vendor Announcements
Vendor announcements are not available.
 
Impact
An authenticated, remote attacker could exploit the vulnerability to cause the affected software terminate abnormally, denying service to legitimate users.
 
Technical Information
The vulnerability is due to insufficient validation of user-supplied input when the affected software handles input to the web_auth_custom.html script of the Cisco Wireless LAN Controller Software web-based management interface.

An authenticated, remote attacker could exploit the vulnerability by sending crafted HTTP GET requests to the targeted system. When processed, the malicious requests could cause the vulnerable software terminate abnormally, denying service to legitimate users.
 
Safeguards
Administrators are advised to contact the vendor regarding future updates and releases.

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

Administrators are advised to monitor affected systems.
 
Patches/Software
Patches and software updates are not available.
 
Alert History
 
Initial Release


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

Primary Products:
CiscoCisco Wireless LAN Controller 7.0 Base, 98.0, 98.218, 116.0, 220.0 | 7.1 Base, 91.0 | 7.2 Base, 103.0

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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