CVE-2012-2751

Name: CVE-2012-2751
Creator: NVD / NIST
Published: 2012-07-22T16:55:27.96+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.30%

Last modified Jun 16, 2026

CVE-2012-2751 is a vulnerability of currently unknown severity. ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031.. EPSS estimates a 3.30% chance of exploitation in the next 30 days.

Description

ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031.

Metrics

EPSS Probability

3.30%

86.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Trustwave	Modsecurity	< 2.6.6
Opensuse	Opensuse	11.4
Opensuse	Opensuse	12.2
Opensuse	Opensuse	12.3
Debian	Debian Linux	6.0
Debian	Debian Linux	7.0
Oracle	Http Server	11.1.1.6.0

References

http://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.htmlMailing List, Third Party Advisory
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGESBroken Link
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/CHANGES?r1=1920&r2=1919&pathrev=1920Broken Link
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/apache2/msc_multipart.c?r1=1918&r2=1917&pathrev=1918Broken Link
http://secunia.com/advisories/49576Third Party Advisory
http://secunia.com/advisories/49782Third Party Advisory
http://www.debian.org/security/2012/dsa-2506Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:118Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/06/22/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/06/22/2Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.htmlThird Party Advisory
http://www.securityfocus.com/bid/54156Third Party Advisory, VDB Entry
http://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.htmlMailing List, Third Party Advisory
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGESBroken Link
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/CHANGES?r1=1920&r2=1919&pathrev=1920Broken Link
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/apache2/msc_multipart.c?r1=1918&r2=1917&pathrev=1918Broken Link
http://secunia.com/advisories/49576Third Party Advisory
http://secunia.com/advisories/49782Third Party Advisory
http://www.debian.org/security/2012/dsa-2506Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2012:118Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/06/22/1Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/06/22/2Mailing List, Third Party Advisory
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.htmlThird Party Advisory
http://www.securityfocus.com/bid/54156Third Party Advisory, VDB Entry

Timeline

Published: Jul 22, 2012
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-2751?

How severe is CVE-2012-2751?

Severity scoring for CVE-2012-2751 is pending analysis. The EPSS model estimates a 3.30% probability of exploitation in the next 30 days.

How do I fix CVE-2012-2751?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-2751?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST