Description
Interpretation conflict in ModSecurity (mod_security) 2.1.0 and earlier allows remote attackers to bypass request rules via application/x-www-form-urlencoded POST data that contains an ASCIIZ (0x00) byte, which mod_security treats as a terminator even though it is still processed as normal data by some HTTP parsers including PHP 5.2.0, and possibly parsers in Perl, and Python.
Exploits (1)
exploitdb
WRITEUP
VERIFIED
by Stefan Esser · textremotemultiple
https://www.exploit-db.com/exploits/3425
References (15)
Core 15
Core References
Vendor Advisory x_refsource_confirm
http://www.oracle.com/technetwork/topics/security/cpujul2008-090335.html
Third Party Advisory vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2008/2115
Third Party Advisory, VDB Entry vdb-entry
x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/32872
Third Party Advisory vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2007/0868
Vendor Advisory vendor-advisory
x_refsource_hp
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c00727143
Exploit, Vendor Advisory x_refsource_misc
http://www.php-security.org/MOPB/BONUS-12-2007.html
Various Sources x_refsource_confirm
http://www.modsecurity.org/blog/archives/2007/03/modsecurity_asc.html
Third Party Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/25316
Third Party Advisory vdb-entry
x_refsource_vupen
http://www.vupen.com/english/advisories/2008/2109/references
Vendor Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/24373
Third Party Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31087
Third Party Advisory vendor-advisory
x_refsource_gentoo
http://www.gentoo.org/security/en/glsa/glsa-200705-17.xml
Third Party Advisory third-party-advisory
x_refsource_secunia
http://secunia.com/advisories/31113
Vendor Advisory vdb-entry
x_refsource_bid
http://www.securityfocus.com/bid/22831
Third Party Advisory, VDB Entry vdb-entry
x_refsource_osvdb
http://www.osvdb.org/32778
Scores
EPSS
0.2350
EPSS Percentile
96.0%
Details
Status
published
Products (7)
mod_security/mod_security
1.7
mod_security/mod_security
1.7.1
mod_security/mod_security
1.7.2
mod_security/mod_security
1.7.4
mod_security/mod_security
1.7.5
mod_security/mod_security
1.9.4
mod_security/mod_security
2.1
Published
Mar 08, 2007
Tracked Since
Feb 18, 2026