{"id":"CVE-2012-5571","url":"https://www.cyber-defence.io/tools/cve/CVE-2012-5571","generatedAt":"2026-10-27T17:43:48.016Z","title":"This vulnerability allows remote authenticated users to bypass intended authorization restrictions.","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.","published":"2012-12-18T01:55:04.000Z","lastModified":"2026-06-16T23:47:02.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},"cwe":["CWE-639","CWE-255"],"affected":["openstack/essex","openstack/folsom"],"epss":{"score":0.02055,"percentile":0.81147,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (2.05%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-December/094286.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1556.html","source":"secalert@redhat.com"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1557.html","source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51423","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://secunia.com/advisories/51436","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/28/5","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/28/6","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://www.securityfocus.com/bid/56726","source":"secalert@redhat.com"},{"url":"http://www.ubuntu.com/usn/USN-1641-1","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2012-5571","source":"secalert@redhat.com"},{"url":"https://bugs.launchpad.net/keystone/+bug/1064914","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80333","source":"secalert@redhat.com"},{"url":"https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653","tags":["Patch"],"source":"secalert@redhat.com"},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2012-December/094286.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1556.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://rhn.redhat.com/errata/RHSA-2012-1557.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51423","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/51436","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/28/5","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2012/11/28/6","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/56726","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ubuntu.com/usn/USN-1641-1","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://bugs.launchpad.net/keystone/+bug/1064914","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/80333","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2012-5571","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}