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    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.

    Published:Nov 28, 2012
    Last Modified:Apr 7, 2026
    EPS:Dec 18, 2012
    EPSS Score:0.00173
    CVSS Score:5.4

    Affected Products

    Vendor
    Openstack
    Product
    Essex
    Vendor
    Openstack
    Product
    Folsom
    Vendor
    Redhat
    Product
    Openstack

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2013-1838 (CVSS 4) — OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) does not properly implement a quota for …
    CVE-2013-1840 (CVSS 3.5) — The v1 API in OpenStack Glance Essex (2012.1), Folsom (2012.2), and Grizzly, when using the single-tenant Swif…
    CVE-2013-0335 (CVSS 7.6) — OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users to gai…
    CVE-2013-0266 (CVSS 5.5) — A flaw was found in the `puppetlabs-cinder` module, as used in PackStack. This vulnerability is due to incorre…
    CVE-2013-0261 (CVSS 8.8) — A flaw was found in PackStack. A local user could exploit a symlink attack on a temporary file with a predicta…
    CVE-2013-0208 (CVSS 6.5) — The boot-from-volume feature in OpenStack Compute (Nova) Folsom and Essex, when using nova-volumes, allows rem…
    CVE-2012-5482 (CVSS 5.5) — The v2 API in OpenStack Glance Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users …
    CVE-2012-4573 (CVSS 5.5) — The v1 API in OpenStack Glance Grizzly, Folsom (2012.2), and Essex (2012.1) allows remote authenticated users …
    CVE-2012-3542 (CVSS 4.3) — OpenStack Keystone, as used in OpenStack Folsom before folsom-rc1 and OpenStack Essex (2012.1), allows remote …
    CVE-2012-3426 (CVSS 4.9) — OpenStack Keystone before 2012.1.1, as used in OpenStack Folsom before Folsom-1 and OpenStack Essex, does not …

    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
    http://secunia.com/advisories/51436
    http://www.openwall.com/lists/oss-security/2012/11/28/5
    http://www.openwall.com/lists/oss-security/2012/11/28/6
    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/1064914
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
    https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b
    https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19
    https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653
    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
    http://secunia.com/advisories/51436
    http://www.openwall.com/lists/oss-security/2012/11/28/5
    http://www.openwall.com/lists/oss-security/2012/11/28/6
    http://www.securityfocus.com/bid/56726
    http://www.ubuntu.com/usn/USN-1641-1
    https://bugs.launchpad.net/keystone/+bug/1064914
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80333
    https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b
    https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19
    https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High