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CVE-2021-3563: Openstack Keystone Incorrect Authorization vulnerability

August 27, 2022 (updated October 27, 2026)

A flaw was found in openstack-keystone, only the first 72 characters of an application secret are verified allowing attackers bypass some password complexity which administrators may be counting on. The highest threat from this vulnerability is to data confidentiality and integrity. A patch is available.

References

  • access.redhat.com/security/cve/CVE-2021-3563
  • bugs.launchpad.net/ossa/+bug/1901891
  • bugzilla.redhat.com/show_bug.cgi?id=1962908
  • github.com/advisories/GHSA-cc99-whm5-mmq3
  • github.com/pypa/advisory-database/tree/main/vulns/keystone/PYSEC-2026-370.yaml
  • lists.debian.org/debian-lts-announce/2024/01/msg00007.html
  • nvd.nist.gov/vuln/detail/CVE-2021-3563
  • opendev.org/openstack/keystone
  • opendev.org/openstack/keystone/commit/7859ed26003858ebfd9a5e866b43f1a6a9e83dca
  • pypi.org/project/keystone
  • review.opendev.org/c/openstack/keystone/+/803641
  • review.opendev.org/c/openstack/keystone/+/828595
  • review.opendev.org/c/openstack/keystone/+/856489
  • security-tracker.debian.org/tracker/CVE-2021-3563

Code Behaviors & Features

Detect and mitigate CVE-2021-3563 with GitLab Dependency Scanning

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Affected versions

All versions up to 21.0.0

Solution

Unfortunately, there is no solution available yet.

Impact 9.1 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-863: Incorrect Authorization

Source file

pypi/keystone/CVE-2021-3563.yml

Spotted a mistake? Edit the file on GitLab.

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