CVE-2013-2765: Null Pointer Dereference
First published: Mon May 27 2013(Updated: )
Description of problem: Modsecurity 2.7.4 was released today, according to the changelog there a null pointer dereference flaw ..... Security Issues: * Fixed Remote Null Pointer DeReference (<a href="https://access.redhat.com/security/cve/CVE-2013-2765">CVE-2013-2765</a>). When forceRequestBodyVariable action is triggered and a unknown Content-Type is used, mod_security will crash trying to manipulate msr->msc_reqbody_chunks->elts however msr->msc_reqbody_chunks is NULL. (Thanks Younes JAAIDI). ...... URL: <a href="https://raw.github.com/SpiderLabs/ModSecurity/master/CHANGES">https://raw.github.com/SpiderLabs/ModSecurity/master/CHANGES</a>
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/ModSecurity | <2.7.4 | 2.7.4 |
| Trustwave ModSecurity | <2.7.4 | |
| Apache HTTP Server | ||
| SUSE Linux | =11.4 | |
| SUSE Linux | =12.2 | |
| SUSE Linux | =12.3 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2013-2765
- https://raw.github.com/SpiderLabs/ModSecurity/master/CHANGES
- https://github.com/SpiderLabs/ModSecurity/commit/0840b13612a0b7ef1ce7441cf811dcfc6b463fba
- http://sourceforge.net/mailarchive/message.php?msg_id=30900019
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=967775
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=967776
- https://bugzilla.redhat.com/show_bug.cgi?id=967615
- http://archives.neohapsis.com/archives/bugtraq/2013-05/0125.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
- http://www.modsecurity.org/
- http://www.shookalabs.com/
- https://github.com/shookalabs/exploits/blob/master/modsecurity_cve_2013_2765_check.py
Frequently Asked Questions
What is the severity of CVE-2013-2765?
CVE-2013-2765 has been rated as a moderate severity vulnerability due to its potential for remote exploitation.
How do I fix CVE-2013-2765?
To fix CVE-2013-2765, upgrade ModSecurity to version 2.7.4 or later.
What causes CVE-2013-2765?
CVE-2013-2765 is caused by a null pointer dereference flaw in ModSecurity.
Which versions of ModSecurity are affected by CVE-2013-2765?
ModSecurity versions prior to 2.7.4 are affected by CVE-2013-2765.
Is there a workaround for CVE-2013-2765?
There is no official workaround for CVE-2013-2765; upgrading to the patched version is recommended.
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