CVE-2012-5571
A flaw was found in OpenStack Keystone. This vulnerability allows remote authenticated users to bypass intended authorization restrictions. This occurs because OpenStack Keystone does not properly handle EC2 (Elastic Compute Cloud) tokens when a user's role has been removed from a tenant. An attacker can leverage a token associated with a removed user role to gain unauthorized access.
Key facts
- CVSS score
- 5.4 (v3.1)
- Severity
- MEDIUM
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N- Weakness (CWE)
- CWE-639
- EPSS score
- 2.0% (81th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2012-0016)
- Published
- December 18, 2012
- NVD last modified
- October 30, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2012-0016 in the EU Vulnerability Database. Last updated in EUVD on October 30, 2026.
View on the EU Vulnerability DatabaseAffected products
- openstack / essex
- openstack / folsom
References
- http://lists.fedoraproject.org/pipermail/package-announce/2012-December/094286.html
- http://rhn.redhat.com/errata/RHSA-2012-1556.html
- http://rhn.redhat.com/errata/RHSA-2012-1557.html
- http://secunia.com/advisories/51423(Vendor Advisory)
- http://secunia.com/advisories/51436(Vendor Advisory)
- http://www.openwall.com/lists/oss-security/2012/11/28/5(Patch)
- http://www.openwall.com/lists/oss-security/2012/11/28/6(Patch)
- http://www.securityfocus.com/bid/56726
- http://www.ubuntu.com/usn/USN-1641-1
- https://access.redhat.com/errata/RHSA-2012:1556
- https://access.redhat.com/errata/RHSA-2012:1557
- https://access.redhat.com/security/cve/CVE-2012-5571
- https://bugs.launchpad.net/keystone/+bug/1064914(Patch)
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
- https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b(Patch)
- https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19(Patch)
- https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653(Patch)
Last updated November 1, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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