CVE-2013-4154

medium
Published 2013-09-30 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
4.3

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.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed1.1.0-4
debian debianbullseyefixed1.1.0-4
debian debianforkyfixed1.1.0-4
debian debiansidfixed1.1.0-4
debian debiantrixiefixed1.1.0-4

Application impact

VendorProductVersionsFixed
redhat redhatlibvirt1.0.1
redhat redhatlibvirt{"endIncluding":"1.1.0"}
redhat redhatlibvirt1.0.0
redhat redhatlibvirt1.0.2
redhat redhatlibvirt1.0.3
redhat redhatlibvirt1.0.4
redhat redhatlibvirt1.0.5
redhat redhatlibvirt1.0.6

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.