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Fencer Intel
medium 5.5

CVE-2020-8632 json

In cloud-init through 19.4, rand_user_password in cloudinit/config/cc_set_passwords.py has a small default pwlen value, which makes it easi…

published 6y ago modified 4mo ago also EUVD-2020-29480

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 32%
public exploits
0
none known

Summary

In cloud-init through 19.4, rand_user_password in cloudinit/config/cc_set_passwords.py has a small default pwlen value, which makes it easier for attackers to guess passwords.

Patch / fix

  • cloud-init Debian 14, Debian 13, Debian 12 19.4-2

debian advisories DEBIAN-CVE-2020-8632

  • cloud-init Ubuntu 18.04 LTS 20.2-45-g5f7825e2-0ubuntu1~18.04.1
  • cloud-init Ubuntu 20.04 LTS 20.1-10-g71af48df-0ubuntu5
  • cloud-init Ubuntu 22.04 LTS 21.4-25-g039c40f9-0ubuntu1~22.04.1

ubuntu advisories UBUNTU-CVE-2020-8632

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cloud-init RHEL 8 19.4-11.el8
  • cloud-init RHEL 7 19.4-7.el7

red hat advisories RHSA-2020:4650RHSA-2020:3898

  • cloud-init SLE Module for Public Cloud 12 19.4-37.39.1
  • cloud-init SLE Module for Public Cloud 15 SP1 19.4-8.17.1
  • cloud-init SLE Module for Public Cloud 15 19.4-5.24.1

suse advisories SUSE-SU-2020:0818-1SUSE-SU-2020:0751-1SUSE-SU-2020:0585-1

  • cloud-init openSUSE Tumbleweed 21.2-1.2
  • cloud-init openSUSE Leap 15.1 19.4-lp151.2.15.1

opensuse advisories openSUSE-SU-2024:10688-1openSUSE-SU-2020:0400-1

Is CVE-2020-8632 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-8632 updated cvss 8.1

cloud-init: Too short random password length in cc_set_password in config/cc_set_passwords.py

  • Red Hat Enterprise Linux 6 cloud-init
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux AppStream (v. 8) cloud-init 19.4-11.el8
    fixed: vendor fix RHSA-2020:4650
  • Red Hat Enterprise Linux Server (v. 7) cloud-init 19.4-7.el7
    fixed: vendor fix RHSA-2020:3898

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-521 Weak Password Requirements

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.