CVE-2015-7546

2016-02-0300:00:00

ubuntu.com

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

59.1%

JSON

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.

Bugs

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

Notes

Author	Note
mdeslaur	we will not be fixing this in Ubuntu 14.04 LTS. Users are encouraged to migrate to a different token provider as described in the upstream advisory.