HOME VULNERABILITIESCVE-2012-2751

MEDIUM

CVE-2012-2751

NVD-CWE-OtherPublished: July 22, 2012· Updated: Jun 16, 2026

4.3

CVSS v3.1

Official 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.

Technical Analysis

CVE-2012-2751 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityM

Privileges Req.

User Interaction

Scope

Impact

ConfidentialityNone

IntegrityP

AvailabilityNone

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected Vendors & Products

Debian1 product(s)

debian linux

openSUSE1 product(s)

opensuse

Oracle1 product(s)

http server

trustwave1 product(s)

modsecurity

Source: NVD CPE · 7 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html

ADVISORYhttp://secunia.com/advisories/49576

ADVISORYhttp://secunia.com/advisories/49782

ADVISORYhttp://www.debian.org/security/2012/dsa-2506

ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2012:118

ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2013:150

ADVISORYhttp://www.openwall.com/lists/oss-security/2012/06/22/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2012/06/22/2

ADVISORYhttp://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html

ADVISORYhttp://www.securityfocus.com/bid/54156

ADVISORYhttp://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html

ADVISORYhttp://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html

ADVISORYhttp://secunia.com/advisories/49576

ADVISORYhttp://secunia.com/advisories/49782

ADVISORYhttp://www.debian.org/security/2012/dsa-2506

ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2012:118

ADVISORYhttp://www.mandriva.com/security/advisories?name=MDVSA-2013:150

ADVISORYhttp://www.openwall.com/lists/oss-security/2012/06/22/1

ADVISORYhttp://www.openwall.com/lists/oss-security/2012/06/22/2

ADVISORYhttp://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html

ADVISORYhttp://www.securityfocus.com/bid/54156

All References (32)

→

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

Quick Facts

CVE IDCVE-2012-2751

CVSS Score4.3 / 10

SeverityMEDIUM

WeaknessNVD-CWE-Other

CISA KEVNo

Affected4 vendor(s)

PublishedJul 22, 2012

Related CVEs (NVD-CWE-Other)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2012-2751 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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