Auth bypass in OpenStack Keystone
CVE-2021-3563
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.019 (79.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.001
Affected products
- OpenStack Keystone
- Debian Linux — versions 10.0, 11.0
- Red Hat OpenStack Platform — versions 10.0, 13.0, 16.1
- Keystone — versions Not-known
Weakness classification (CWE)
References
- bugs.launchpad.net/ossa/+bug/1901891 (Exploit, VDB Entry, Third Party Advisory, Issue Tracking)
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-3563 (Third Party Advisory, Issue Tracking)
- security-tracker.debian.org/tracker/CVE-2021-3563 (Exploit, Third Party Advisory, Issue Tracking)
- lists.debian.org/debian-lts-announce/2024/01/msg00007.html
Frequently asked questions
- What is CVE-2021-3563?
- CVE-2021-3563 is a high-severity vulnerability in OpenStack Keystone, classified under Incorrect Authorization. CVSS score: 7.4/10. Published 2022-08-26.
- How severe is CVE-2021-3563?
- High severity. CVSS v3 base score is 7.4 out of 10.