CVE-2021-3563

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2022-08-26 · updated 2026-06-17
Weakness: CWE-863

Description

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.

Affected products

Debian Linux: 10.0, 11.0
OpenStack Keystone: all versions
nova_libvirt container provided by the Red Hat OpenStack Platform: 10.0, 13.0, 16.1, 16.2

References

https://access.redhat.com/security/cve/CVE-2021-3563
https://bugs.launchpad.net/ossa/+bug/1901891
https://bugzilla.redhat.com/show_bug.cgi?id=1962908
https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html
https://security-tracker.debian.org/tracker/CVE-2021-3563
https://access.redhat.com/security/cve/CVE-2021-3563
https://bugs.launchpad.net/ossa/+bug/1901891
https://bugzilla.redhat.com/show_bug.cgi?id=1962908
https://lists.debian.org/debian-lts-announce/2024/01/msg00007.html
https://security-tracker.debian.org/tracker/CVE-2021-3563

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