[SA23626] FirePass URL Restriction Bypass

Type securityvulns
Reporter Securityvulns
Modified 2007-01-12T00:00:00


TITLE: FirePass URL Restriction Bypass


VERIFY ADVISORY: http://secunia.com/advisories/23626/

CRITICAL: Moderately critical

IMPACT: Security Bypass

WHERE: >From remote

OPERATING SYSTEM: FirePass 6.x http://secunia.com/product/13146/ FirePass 5.x http://secunia.com/product/4695/

DESCRIPTION: Michael Ligh and Greg Sinclair have reported a vulnerability in FirePass, which can be exploited by malicious people to bypass certain security restrictions.

The problem is that it is possible to bypass filters and access restricted URLs by using certain non-canonicalised URLs (e.g. by adding a NULL-byte, including additional slashes or dots, or using unicode-encoded characters in the request).

The vulnerability is reported in versions 6.0 and 5.4 through 5.5.2.

SOLUTION: FirePass 5.x: Reportedly fixed in Cumulative Hotfix 552-2.

FirePass 6.0: Reportedly fixed in Cumulative Hotfix 600-8.

PROVIDED AND/OR DISCOVERED BY: Michael Ligh and Greg Sinclair

ORIGINAL ADVISORY: http://lists.grok.org.uk/pipermail/full-disclosure/2007-January/051651.html

F5: https://tech.f5.com/home/solutions/sol6924.html

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