Bug#951362: cloud-init: CVE-2020-8631

[Salvatore Bonaccorso <carnil@debian.org>]

Source: cloud-init
Version: 19.4-1
Severity: important
Tags: security upstream
Forwarded: https://github.com/canonical/cloud-init/pull/204

Hi,

The following vulnerability was published for cloud-init.

CVE-2020-8631[0]:
| 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.

AFAIU not yet fixed upstream.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-8631
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8631
[1] https://github.com/canonical/cloud-init/pull/204

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore