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Vulnerability Alert

Cisco Wireless LAN Controller Privilege Escalation Vulnerabilities

 
Threat Type:CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID:21290
Version:2
First Published:2010 September 08 16:10 GMT
Last Published:2010 September 13 15:00 GMT
Port: Not available
CVE:CVE-2010-2842 , CVE-2010-2843 , CVE-2010-3033
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 has released an updated security advisory to identify additional software versions affected by the Cisco Wireless LAN Controller privilege escalation vulnerabilities.

 
 
Description

Cisco Wireless LAN Controller (WLC) software contains vulnerabilities that could allow an authenticated, remote attacker to gain elevated privileges.

The vulnerabilities are due to improper security controls.? An authenticated, remote attacker could exploit the vulnerabilities to gain elevated privileges on the device, possibly resulting in complete compromise.

Cisco has confirmed the vulnerabilities in a security advisory and released updated software.

 
Warning Indicators

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

  • All 4.0 versions
  • All 4.1 versions
  • All 4.1M versions
  • 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 5.2.193.11
  • Versions prior to 6.0.188.0
 
IntelliShield Analysis

To exploit the vulnerabilities, an attacker must be able to authenticate to a targeted device.? The attacker may also require access to trusted networks to establish a connection with a device.? The access requirements greatly reduce the potential for exploitation.

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 re-released a security advisory for Cisco bug IDs CSCtc91431, CSCsz66726, and CSCtc93837 at the following link: cisco-sa-20100908-wlc

 
Impact

An authenticated, remote attacker could exploit the vulnerabilities to gain additional privileges on the device, possibly resulting in complete compromise.

 
Technical Information

The vulnerabilities are due to improper security controls on Cisco WLC management interfaces.? An authenticated, remote attacker with read-only access could exploit the vulnerabilities to make modifications to the device configuration.? The modifications may allow the attacker to gain elevated privileges on the device, possibly resulting in complete compromise.

 
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
 

Version 1, September 8, 2010, 12:10 PM: Cisco Wireless LAN Controller software contains vulnerabilities that could allow an authenticated, remote attacker to gain elevated privileges.  Updates are available.



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

Primary Products:
CiscoCisco Wireless LAN Controller (WLC) 4.0 .108, .155.0, .155.5, .179.8, .179.11, .196, .206.0, .217.0, .219.0 | 4.1 Base, .171.0, .181.0, .185.0 | 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 | 5.2 .157.0, .169.0 | 6.0 Base, 182.0

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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