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CVE-2009-5031

4.3 · MEDIUM

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 scr…

Published Jul 22, 2012trustwaveCWE-79EPSS 2.93%

Overview

CVE-2009-5031 is a medium-severity vulnerability affecting trustwave modsecurity. It was published on July 22, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from trustwave. Update modsecurity to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
trustwavemodsecurity>= 0, < 2.5.11Affected

References

Refblog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.htmlReflists.opensuse.org/opensuse-updates/2013-08/msg00020.htmlReflists.opensuse.org/opensuse-updates/2013-08/msg00025.htmlReflists.opensuse.org/opensuse-updates/2013-08/msg00031.htmlRefmod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGESRefsecunia.com/advisories/49576Refwww.openwall.com/lists/oss-security/2012/06/22/1Refwww.openwall.com/lists/oss-security/2012/06/22/2Refwww.securityfocus.com/bid/54156Refwww.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2009-5031?

CVE-2009-5031 is a medium-severity vulnerability affecting trustwave modsecurity. It was published on July 22, 2012 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2009-5031?

This vulnerability has a CVSS 2.0 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2009-5031?

Check the references section for vendor advisories and patches from trustwave. Update modsecurity to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2009-5031?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2009-5031 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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