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 Wireless LAN Controller Software Access Control List Bypass Vulnerability

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:21291
Version:1
First Published:2010 September 08 16:10 GMT
Last Published:2010 September 08 16:10 GMT
Port: Not available
CVE:CVE-2010-0575 , CVE-2010-3034
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:5.0 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:4.1
Related Resources:
View related Security AdvisoryView related Applied Mitigation Bulletin
 
 
Version Summary:

Cisco Wireless LAN Controller software contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions.  Updates are available.

 
 
Description

Cisco Wireless LAN Controller (WLC) software contains a vulnerability that could allow an unauthenticated, remote attacker to bypass security restrictions.

The vulnerability is due to errors in the enforcement of access control lists (ACLs).  An unauthenticated, remote attacker could exploit this vulnerability to bypass security restrictions and gain unauthorized access to protected networks or devices.

Cisco has confirmed this vulnerability in a security advisory and released updated software.

 
Warning Indicators

Devices running the following versions of Cisco Wireless LAN Controller are vulnerable:

  • Versions prior to 4.2.209.0
  • Versions prior to 4.2.207.54M
  • All 5.0 versions
  • All 5.1 versions
  • Versions prior to 6.0.188.0
 
IntelliShield Analysis

An exploit could allow wireless clients to bypass security restrictions and gain unauthorized access to the device or other networks.  As a result, the attacker could access sensitive information or use the additional access to mount further attacks.

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 IDs CSCta66931 and CSCtf36051 at the following link: cisco-sa-20100908-wlc

 
Impact

An unauthenticated, remote attacker could exploit this vulnerability to bypass security protections and gain unauthorized access to restricted networks.

 
Technical Information

The vulnerability is due to errors in the application of CPU ACLs that are defined in the web-based management interface of the Cisco WLC software.  Policies may not be properly enforced, allowing an unauthenticated, remote attacker to reach network segments or devices that are explicitly blocked by the CPU ACLs.  As a result, the attacker could bypass the security restrictions and gain unauthorized access.

 
Safeguards

Administrators are advised to apply the available software updates.

Administrators are advised to restrict access to affected systems.

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

Administrators are advised to monitor critical 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-20100908-wlc

 
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) 4.2 Base, .61.0, .99.0, .112.0, .117.0, .130.0, .173.0, .174.0, .176.0, .182.0 | 5.0 .148.0, .148.2 | 5.1 .151.0, .152.0, .160.0 | 6.0 Base, 182.0

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