CVE-2012-2751

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.

4.3

CVSS

Severity: Medium

CVSS 2.0 •

EPSS 3.19% Top 15%

Vendor Advisory opensuse.org Vendor Advisory debian.org Vendor Advisory opensuse.org Vendor Advisory mandriva.com Vendor Advisory mandriva.com Vendor Advisory opensuse.org

Affected: n/a n/a

References

Link	Tags
http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html	mailing list third party advisory vendor advisory
http://www.securityfocus.com/bid/54156	vdb entry third party advisory
http://www.debian.org/security/2012/dsa-2506	third party advisory vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html	mailing list third party advisory vendor advisory
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGES	broken link
http://secunia.com/advisories/49782	third party advisory
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/apache2/msc_multipart.c?r1=1918&r2=1917&pathrev=1918	broken link
http://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.html	third party advisory
http://www.openwall.com/lists/oss-security/2012/06/22/2	third party advisory mailing list
http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html	third party advisory
http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/trunk/CHANGES?r1=1920&r2=1919&pathrev=1920	broken link
http://www.openwall.com/lists/oss-security/2012/06/22/1	third party advisory mailing list
http://www.mandriva.com/security/advisories?name=MDVSA-2012:118	third party advisory vendor advisory
http://secunia.com/advisories/49576	third party advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:150	third party advisory vendor advisory
http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html	mailing list third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2012-2751?: CVE-2012-2751 has been scored as a medium severity vulnerability.
How to fix CVE-2012-2751?: To fix CVE-2012-2751, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-2751 being actively exploited in the wild?: It is possible that CVE-2012-2751 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.