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CVE-2013-2239

4.7 · MEDIUM

vzkernel before 042stab080.2 in the OpenVZ modification for the Linux kernel 2.6.32 does not initialize certain length variables, which allows local users to obtain sensitive information from kerne…

Published Nov 12, 2013openvzCWE-264EPSS 0.35%

Overview

CVE-2013-2239 is a medium-severity vulnerability affecting openvz vzkernel. It was published on November 12, 2013 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

vzkernel before 042stab080.2 in the OpenVZ modification for the Linux kernel 2.6.32 does not initialize certain length variables, which allows local users to obtain sensitive information from kernel stack memory via (1) a crafted ploop driver ioctl call, related to the ploop_getdevice_ioc function in drivers/block/ploop/dev.c, or (2) a crafted quotactl system call, related to the compat_quotactl function in fs/quota/quota.c.

Remediation

Check the references section for vendor advisories and patches from openvz. Update vzkernel 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

References

Refopenwall.com/lists/oss-security/2013/07/04/9Refwiki.openvz.org/Download/kernel/rhel6-testing/042stab080.2Refwww.debian.org/security/2013/dsa-2766Refbugs.gentoo.org/show_bug.cgi?id=475762Refsecurity-tracker.debian.org/tracker/CVE-2013-2239Refopenwall.com/lists/oss-security/2013/07/04/9Refwiki.openvz.org/Download/kernel/rhel6-testing/042stab080.2Refwww.debian.org/security/2013/dsa-2766Refbugs.gentoo.org/show_bug.cgi?id=475762Refsecurity-tracker.debian.org/tracker/CVE-2013-2239

How CyberStrike helps

Frequently asked questions

What is CVE-2013-2239?

CVE-2013-2239 is a medium-severity vulnerability affecting openvz vzkernel. It was published on November 12, 2013 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

How severe is CVE-2013-2239?

This vulnerability has a CVSS 2.0 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2013-2239?

Check the references section for vendor advisories and patches from openvz. Update vzkernel 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-2013-2239?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-2239 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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