CVE-2020-12430

NameCVE-2020-12430
DescriptionAn issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs959447

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libvirt (PTS)stretch3.0.0-4+deb9u4fixed
stretch (security)3.0.0-4+deb9u5fixed
buster5.0.0-4+deb10u1vulnerable
bullseye, sid6.6.0-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libvirtsourceexperimental6.2.0-1
libvirtsourcejessie(not affected)
libvirtsourcestretch(not affected)
libvirtsource(unstable)6.4.0-2low959447

Notes

[buster] - libvirt <no-dsa> (Minor issue)
[stretch] - libvirt <not-affected> (Vulnerable code introduced later)
[jessie] - libvirt <not-affected> (Vulnerable code introduced later)
Fixed by: https://libvirt.org/git/?p=libvirt.git;a=commit;h=9bf9e0ae6af38c806f4672ca7b12a6b38d5a9581 (v6.1.0-rc1)
Introduced in: https://libvirt.org/git/?p=libvirt.git;a=commit;h=d1eac92784573559b6fd56836e33b215c89308e3 (v4.10.0-rc1)
https://bugzilla.redhat.com/show_bug.cgi?id=1804548
https://bugzilla.redhat.com/show_bug.cgi?id=1828190

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