CVE-2013-4399

CVE-2013-4399 is a medium-severity vulnerability in Redhat Libvirt with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The remoteClientFreeFunc function in daemon/remote.c in libvirt before 1.1.3, when ACLs are used, does not set an identity, which causes event handler removal to be denied and remote attackers to cause a denial of service (use-after-free and crash) by registering an event handler and then closing the connection.

Frequently asked questions

What is CVE-2013-4399?
The remoteClientFreeFunc function in daemon/remote.c in libvirt before 1.1.3, when ACLs are used, does not set an identity, which causes event handler removal to be denied and remote attackers to cause a denial of service (use-after-free and crash) by registering an event handler and then closing the connection.
How severe is CVE-2013-4399?
CVE-2013-4399 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2013-4399 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4399?
CVE-2013-4399 primarily affects Redhat Libvirt. In total, 108 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4399?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4399 published?
CVE-2013-4399 was published on 2014-12-12 and last updated on 2026-06-16.

References

Affected products (108)

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