FrSIRT - Cisco PIX/ASA/FWSM WebSense/N2H2 Content Filtering Bypass Vulnerability / Exploit (Security Advisories)

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Cisco PIX/ASA/FWSM WebSense/N2H2 Content Filtering Bypass Vulnerability

Title : Cisco PIX/ASA/FWSM WebSense/N2H2 Content Filtering Bypass Vulnerability
Advisory ID : FrSIRT/ADV-2006-1738
CVE ID : CVE-2006-0515
Rated as : Low Risk

Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2006-05-09

Advisory Details

Description

Affected Products

Solution

References

Technical Description

A vulnerability has been identified in Cisco PIX/ASA/FWSM, which could be exploited by attackers to bypass HTTP content restrictions. This flaw is due to an error within the handling of fragmented HTTP GET requests when the application is configured to use Websense/N2H2 for content filtering, which could be exploited by attackers to cause a vulnerable firewall to mistakenly allow a restricted web site to be accessed.

Credits

Vulnerability reported by George D. Gal

ChangeLog

2006-05-09 : Initial release

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