python-keystoneclient before 0.2.4, as used in OpenStack Keystone (Folsom), does not properly check expiry for PKI tokens, which allows remote authenticated users to (1) retain use of a token after it has expired, or (2) use a revoked token once it expires.
https://bugs.launchpad.net/python-keystoneclient/+bug/1179615
http://www.ubuntu.com/usn/USN-1875-1
http://www.ubuntu.com/usn/USN-1851-1
http://www.openwall.com/lists/oss-security/2013/05/28/7
http://rhn.redhat.com/errata/RHSA-2013-0944.html
http://lists.opensuse.org/opensuse-updates/2013-06/msg00198.html
Published: 2014-01-21
Updated: 2025-04-11
Base Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:P
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Severity: High