CVE-2020-8631

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5.5 MEDIUM
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
mitreCNA
---
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 30%
VendorProductVersion
canonicalcloud-init
𝑥
≤ 19.4
opensuseleap
15.1
debiandebian_linux
8.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
cloud-init
bullseye
20.4.1-2+deb11u1
fixed
buster
no-dsa
stretch
no-dsa
bookworm
22.4.2-1+deb12u1
fixed
sid
24.3.1-2
fixed
trixie
24.3.1-2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
cloud-init
jammy
not-affected
impish
not-affected
hirsute
not-affected
groovy
ignored
focal
not-affected
eoan
ignored
bionic
Fixed 20.2-45-g5f7825e2-0ubuntu1~18.04.1
released
xenial
ignored
trusty
dne
Common Weakness Enumeration
References
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795
https://github.com/canonical/cloud-init/pull/204
https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html
https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795
https://github.com/canonical/cloud-init/pull/204
https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html