Published:2011/01/21  Last Updated:2011/01/21

JVN#26605630
Cisco Linksys WRT54GC vulnerable to buffer overflow

Overview

Cisco Linksys WRT54GC provided by Cisco Systems contains a buffer overflow vulnerability.

Products Affected

  • Cisco Linksys WRT54GC firmware prior to 1.6.01

Description

Cisco Linksys WRT54GC provided by Cisco Systems is a network router. Cisco Linksys WRT54GC contains a buffer overflow vulnerability.

Impact

When processing a specially crafted HTTP request, the router may crash resulting in a denial-of-service (DoS).

Solution

Update the software
Update to the latest version according to the information provided by the developer.

Vendor Status

Vendor Link
Cisco Cisco Linksys WRT54GC HTTP String Parsing Remote Buffer Overflow Vulnerability

References

  1. IPA
    Security Alert for Vulnerability in Cisco Linksys WRT54GC

JPCERT/CC Addendum


Vulnerability Analysis by JPCERT/CC

Analyzed on 2011.01.21

Measures Conditions Severity
Access Required can be attacked over the Internet using packets
  • High
Authentication anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required the vulnerability can be exploited without an honest user taking any action
  • High
Exploit Complexity some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls)
  • Mid-High

Description of each analysis measures

Credit

Yuji Ukai of Fourteenforty Research Institute, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendor under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2011-0352
JVN iPedia JVNDB-2011-000007

Update History

2011/01/21
Information under the sections "References" was modified.