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ModSecurity POST Data NULL Byte Rule Bypass
Secunia Advisory: SA24373
Release Date: 2007-03-07
Last Update: 2007-06-07
Popularity: 10,035 views

Critical:
Less critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:ModSecurity 2.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Stefan Esser has discovered a vulnerability in ModSecurity, which can be exploited by malicious people to bypass certain security restrictions.

The problem is that it is possible to bypass rules by adding NULL bytes to POST data with the application/x-www-form-urlencoded media type.

The vulnerability is confirmed in version 2.1.0. Other versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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