Linksys WRT54GC interface buffer overflow

wrt54gc-interface-bo (64850) The risk level is classified as HighHigh Risk

Description:

Linksys WRT54GC is vulnerable to a buffer overflow, caused by improper bounds checking when handling HTTP POST requests. By sending a specially-crafted POST request containing an overly long string, a remote attacker from within the local network could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score: 5.8
  Access Vector: Adjacent Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: Partial
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 4.3
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Linksys WRT54GC (1.06.1 or later), available from the Linksys by Cisco Web site. See References.

References:

  • JVN#26605630: Cisco Linksys WRT54GC vulnerable to buffer overflow.
  • Linksys by Cisco Web site: Linksys by Cisco - WRT54GC Support.
  • CVE-2011-0352: Buffer overflow in the web-based management interface on the Cisco Linksys WRT54GC router with firmware before 1.06.1 allows remote attackers to cause a denial of service (device crash) via a long string in a POST request.
  • OSVDB ID: 70624: Cisco Linksys WRT54GC HTTP POST Request Remote Overflow
  • SA43017: Linksys WRT54GC Web Management Interface Buffer Overflow Vulnerability

Platforms Affected:

  • Linksys WRT54GC 1.5.7

Reported:

Jan 21, 2011

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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