Input validation error in libvirt - CVE-2013-4399
Published: December 12, 2014 / Updated: August 9, 2020
Vulnerability identifier: #VU41014
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-4399
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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. <a href="http://cwe.mitre.org/data/definitions/416.html">CWE-416: Use After Free</a>
Affected software
libvirt
How to mitigate CVE-2013-4399
Install update from vendor's website.