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CVE-2013-4154

4.3 · MEDIUM

The qemuAgentCommand function in libvirt before 1.1.1, when a guest agent is not configured, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via vectors re…

Published Sep 30, 2013redhatEPSS 2.20%

Overview

CVE-2013-4154 is a medium-severity vulnerability affecting redhat libvirt. It was published on September 30, 2013 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

The qemuAgentCommand function in libvirt before 1.1.1, when a guest agent is not configured, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via vectors related to "agent based cpu (un)plug," as demonstrated by the "virsh vcpucount foobar --guest" command.

Remediation

Check the references section for vendor advisories and patches from redhat. Update libvirt 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
redhatlibvirt0Affected

References

Reflibvirt.org/git/?p=libvirt.git%3Ba=commitdiff%3Bh=96518d4316b711c72205117f8d5c967d5127bbb6Reflibvirt.org/news.htmlRefopenwall.com/lists/oss-security/2013/07/19/12Refbugzilla.redhat.com/show_bug.cgi?id=984821Refbugzilla.redhat.com/show_bug.cgi?id=986386Reflibvirt.org/git/?p=libvirt.git%3Ba=commitdiff%3Bh=96518d4316b711c72205117f8d5c967d5127bbb6Reflibvirt.org/news.htmlRefopenwall.com/lists/oss-security/2013/07/19/12Refbugzilla.redhat.com/show_bug.cgi?id=984821Refbugzilla.redhat.com/show_bug.cgi?id=986386

How CyberStrike helps

Frequently asked questions

What is CVE-2013-4154?

CVE-2013-4154 is a medium-severity vulnerability affecting redhat libvirt. It was published on September 30, 2013 and has a CVSS 2.0 base score of 4.3 (MEDIUM).

How severe is CVE-2013-4154?

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-2013-4154?

Check the references section for vendor advisories and patches from redhat. Update libvirt 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-2013-4154?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2013-4154 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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