CVE-2012-5571
This vulnerability allows remote authenticated users to bypass intended authorization restrictions.
Does this matter?
Lower severity and a low EPSS score (2.05%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 2.05% probability · 81th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-639, CWE-255
- Affected
- openstack/essex · openstack/folsom
- Source
- secalert@redhat.com
EPSS 2.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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/51423Vendor Advisory
- http://secunia.com/advisories/51436Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/11/28/5Patch
- http://www.openwall.com/lists/oss-security/2012/11/28/6Patch
- http://www.securityfocus.com/bid/56726
- http://www.ubuntu.com/usn/USN-1641-1
- https://access.redhat.com/security/cve/CVE-2012-5571
- https://bugs.launchpad.net/keystone/+bug/1064914Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
- https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713bPatch
- https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19Patch
- https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653Patch
- 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/51423Vendor Advisory
- http://secunia.com/advisories/51436Vendor Advisory
- http://www.openwall.com/lists/oss-security/2012/11/28/5Patch
- http://www.openwall.com/lists/oss-security/2012/11/28/6Patch
- http://www.securityfocus.com/bid/56726
- http://www.ubuntu.com/usn/USN-1641-1
- https://bugs.launchpad.net/keystone/+bug/1064914Patch
- https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
- https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713bPatch
- https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19Patch
- https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.