CVE-2015-7546

high

Description

The identity service in OpenStack Identity (Keystone) before 2015.1.3 (Kilo) and 8.0.x before 8.0.2 (Liberty) and keystonemiddleware (formerly python-keystoneclient) before 1.5.4 (Kilo) and Liberty before 2.3.3 does not properly invalidate authorization tokens when using the PKI or PKIZ token providers, which allows remote authenticated users to bypass intended access restrictions and gain access to cloud resources by manipulating byte fields within a revoked token.

References

Advisories
More

https://bugs.launchpad.net/keystone/+bug/1490804

http://www.securityfocus.com/bid/80498

http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

https://wiki.openstack.org/wiki/OSSN/OSSN-0062

https://security.openstack.org/ossa/OSSA-2016-005.html

Details

Source: Mitre, NVD

Published: 2016-02-03

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 8.6

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.00849