CVE-2020-17376

Name	CVE-2020-17376
Description	An issue was discovered in Guest.migrate in virt/libvirt/guest.py in OpenStack Nova before 19.3.1, 20.x before 20.3.1, and 21.0.0. By performing a soft reboot of an instance that has previously undergone live migration, a user may gain access to destination host devices that share the same paths as host devices previously referenced by the virtual machine on the source host. This can include block devices that map to different Cinder volumes at the destination than at the source. Only deployments allowing host-based connections (for instance, root and ephemeral devices) are affected.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	969052

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
nova (PTS)	jessie	2014.1.3-11	vulnerable
	stretch (security), stretch (lts), stretch	2:14.0.0-4+deb9u1	vulnerable
	buster (security), buster, buster (lts)	2:18.1.0-6+deb10u2	vulnerable
	bullseye	2:22.0.1-2+deb11u1	fixed
	bullseye (security)	2:22.4.0-1~deb11u5	fixed
	bookworm (security), bookworm	2:26.2.2-1~deb12u3	fixed
	trixie	2:30.0.0-3	fixed
	sid	2:30.0.0-4	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
nova	source	jessie	(unfixed)	end-of-life
nova	source	(unstable)	2:21.1.0-1			969052

Notes

[buster] - nova <no-dsa> (Minor issue)
[stretch] - nova <no-dsa> (Minor issue)
https://launchpad.net/bugs/1890501
https://www.openwall.com/lists/oss-security/2020/08/25/4