FrSIRT - Cisco IOS Regular Expression Processing Denial of Service Vulnerability / Exploit (Security Advisories)

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Cisco IOS Regular Expression Processing Denial of Service Vulnerability

Title : Cisco IOS Regular Expression Processing Denial of Service Vulnerability
Advisory ID : FrSIRT/ADV-2007-3136
CVE ID : GENERIC-MAP-NOMATCH
Rated as : Low Risk

Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2007-09-13

Advisory Details

Description

Affected Products

Solution

References

Technical Description

A vulnerability has been identified in Cisco IOS, which could be exploited by malicious users to cause a denial of service. This issue is caused by an error in the regular expression engine when processing specially crafted regular expressions provided as part of a command, which could be exploited by authenticated attackers to crash or reload and affected device, leading to a denial of service condition.

Credits

Vulnerability reported by Sebastian Wiesinger

ChangeLog

2007-09-13 : Initial release

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