CVE-2020-8631

medium

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.

References

https://github.com/canonical/cloud-init/pull/204

https://bugs.launchpad.net/ubuntu/+source/cloud-init/+bug/1860795

https://lists.debian.org/debian-lts-announce/2020/02/msg00021.html

http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00042.html

Details

Source: MITRE

Published: 2020-02-05

Updated: 2021-12-22

Type: CWE-330

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM