PYSEC-2016-20

    Dashboard / Vulnerabilities / PYSEC-2016-20

    PYSEC-2016-20

    Published: 3 Feb 2016Last Modified: 13 Jul 2026

    Summary:

    Details: 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: https://bugs.launchpad.net/keystone/+bug/1490804, https://wiki.openstack.org/wiki/OSSN/OSSN-0062, https://security.openstack.org/ossa/OSSA-2016-005.html, http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html, http://www.securityfocus.com/bid/80498, https://github.com/advisories/GHSA-8c4w-v65p-jvcv

    Affected packages

    Package

    Name: keystonemiddleware

    Purl: pkg:pypi/keystonemiddleware

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.5.4

    Affected versions

    0

    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