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ModSecurity POST Data NULL Byte Rule Bypass
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Secunia Advisory:
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SA24373
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Release Date:
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2007-03-07
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Last Update:
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2007-06-07
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Popularity:
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8,188 views
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Critical:
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Less critical
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Impact:
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Security Bypass
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | ModSecurity 2.x
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| CVE reference: | CVE-2007-1359
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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.
Solution:
Update to version 2.1.1.
http://www.modsecurity.org/download/index.html
Provided and/or discovered by:
Stefan Esser, Hardened-PHP Project.
Changelog:
2007-03-14: Added CVE reference.
2007-06-07: Updated "Solution" section. Added link to "Original Advisory" section.
Original Advisory:
http://www.modsecurity.org/blog/archives/2007/03/modsecurity_asc.html
MOPB:
http://www.php-security.org/MOPB/BONUS-12-2007.html
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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