Memory leak in libvirt - CVE-2020-12430
Published: May 5, 2020
Vulnerability identifier: #VU27541
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-12430
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the domstats command, resulting in a potential denial of service due to an error in the qemuDomainGetStatsIOThread() in qemu/qemu_driver.c in libvirt. A remote attacker can perform a denial of service attack.
Affected software
libvirt
libvirt (Ubuntu package)
libvirt (Alpine package)
libvirt
Fedora
libvirt (Ubuntu package)
libvirt (Alpine package)
libvirt
Fedora
How to mitigate CVE-2020-12430
Install update from vendor's website.
libvirt - update to 6.1.0
libvirt (Ubuntu package) - addressed in versions 4.0.0-1ubuntu8.17, 5.4.0-0ubuntu5.4
libvirt (Alpine package) - update to 5.5.0-r1
libvirt - update to 5.6.0-7.fc31
libvirt (Ubuntu package) - addressed in versions 4.0.0-1ubuntu8.17, 5.4.0-0ubuntu5.4
libvirt (Alpine package) - update to 5.5.0-r1
libvirt - update to 5.6.0-7.fc31