CVE-2020-8631

Name	CVE-2020-8631
Description	cloud-init through 19.4 relies on Mersenne Twister for a random password, which makes it easier for attackers to predict passwords, because rand_str in cloudinit/util.py calls the random.choice function.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2113-1
Debian Bugs	951362

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
cloud-init (PTS)	jessie, jessie (lts)	0.7.6~bzr976-2+deb8u3	fixed
	stretch (security), stretch (lts), stretch	0.7.9-2+deb9u1	vulnerable
	buster	20.2-2~deb10u2	fixed
	bullseye	20.4.1-2+deb11u1	fixed
	bookworm	22.4.2-1	fixed
	trixie	24.1.1-1	fixed
	sid	24.1.4-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
cloud-init	source	wheezy	(unfixed)	end-of-life
cloud-init	source	jessie	0.7.6~bzr976-2+deb8u1		DLA-2113-1
cloud-init	source	(unstable)	19.4-2			951362

Notes

[buster] - cloud-init <no-dsa> (Minor issue)
[stretch] - cloud-init <no-dsa> (Minor issue)
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795
https://github.com/canonical/cloud-init/pull/204