CVE-2009-5031

Name: CVE-2009-5031
Creator: NVD / NIST
Published: 2012-07-22T16:55:17.307+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.93%

Last modified Jun 16, 2026

CVE-2009-5031 is a vulnerability of currently unknown severity. ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks via a single quote in a request parameter in the Content-Disposition field of a request with a multipart/form-data Content-Type header.. EPSS estimates a 2.93% chance of exploitation in the next 30 days.

Description

ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks via a single quote in a request parameter in the Content-Disposition field of a request with a multipart/form-data Content-Type header.

Metrics

EPSS Probability

2.93%

85.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Trustwave	Modsecurity	< 2.5.11
Opensuse	Opensuse	11.4
Opensuse	Opensuse	12.2
Opensuse	Opensuse	12.3

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://secunia.com/advisories/49576Third 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.securityfocus.com/bid/54156Third Party Advisory, VDB Entry
http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdfThird Party Advisory
https://www.modsecurity.org/fisheye/browse/modsecurity/m2/branches/2.5.x/apache2/msc_multipart.c?r2=1419&r1=1366Broken Link
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://secunia.com/advisories/49576Third 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.securityfocus.com/bid/54156Third Party Advisory, VDB Entry
http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdfThird Party Advisory
https://www.modsecurity.org/fisheye/browse/modsecurity/m2/branches/2.5.x/apache2/msc_multipart.c?r2=1419&r1=1366Broken Link

Timeline

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

Frequently Asked Questions

What is CVE-2009-5031?

How severe is CVE-2009-5031?

Severity scoring for CVE-2009-5031 is pending analysis. The EPSS model estimates a 2.93% probability of exploitation in the next 30 days.

How do I fix CVE-2009-5031?

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-2009-5031?

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

Scan your code now

Source: NVD / NIST