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.
CVE-2012-5571
CVSS base score
5.4 (v3.1)
Severity
MEDIUM
Attack vector
Network
Weakness
CWE-639, CWE-255
Last modified
October 30, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
openstack essex
openstack folsom
References
- lists.fedoraproject.org
- rhn.redhat.com
- rhn.redhat.com
- secunia.com Vendor Advisory
- secunia.com Vendor Advisory
- www.openwall.com Patch
- www.openwall.com Patch
- www.securityfocus.com
- www.ubuntu.com
- access.redhat.com