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CVE-2013-4129

4.7 · MEDIUM

The bridge multicast implementation in the Linux kernel through 3.10.3 does not check whether a certain timer is armed before modifying the timeout value of that timer, which allows local users to…

Published Jul 29, 2013linuxCWE-20EPSS 0.45%

Overview

CVE-2013-4129 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 29, 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

The bridge multicast implementation in the Linux kernel through 3.10.3 does not check whether a certain timer is armed before modifying the timeout value of that timer, which allows local users to cause a denial of service (BUG and system crash) via vectors involving the shutdown of a KVM virtual machine, related to net/bridge/br_mdb.c and net/bridge/br_multicast.c.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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

Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1Refwww.openwall.com/lists/oss-security/2013/07/16/1Refwww.securityfocus.com/bid/61193Refbugzilla.redhat.com/show_bug.cgi?id=984743Refexchange.xforce.ibmcloud.com/vulnerabilities/85763GitHubgithub.com/torvalds/linux/commit/c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1Refgit.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=c7e8e8a8f7a70b343ca1e0f90a31e35ab2d16de1Refwww.openwall.com/lists/oss-security/2013/07/16/1Refwww.securityfocus.com/bid/61193Refbugzilla.redhat.com/show_bug.cgi?id=984743

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4129?

CVE-2013-4129 is a medium-severity vulnerability affecting linux linux_kernel. It was published on July 29, 2013 and has a CVSS 2.0 base score of 4.7 (MEDIUM).

How severe is CVE-2013-4129?

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-2013-4129?

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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-2013-4129?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4129 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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