DescriptionUbuntu's packaging of libvirt in 20.04 LTS created a control socket with world read and write permissions. An attacker could use this to overwrite arbitrary files or execute arbitrary code.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libvirt (PTS)buster5.0.0-4+deb10u1fixed
sid, trixie10.0.0-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libvirtsource(unstable)(not affected)


- libvirt <not-affected> (Ubuntu specific issue)
Debian used to use polkit in 1.2.9-rc1-1 and only later on
enabled as well libvirtd socket activation. Ubuntu OTOH continued
to ship the Allow-libvirt-group-to-access-the-socket.patch patch
which caused the CVE-2020-15708 issue.
Upstream improved documentation in with:

Search for package or bug name: Reporting problems