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Last updated: 9/2/2014 10:20:45 PM

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National Cyber Awareness System

Vulnerability Summary for CVE-2013-4294

Original release date: 09/23/2013
Last revised: 10/30/2013
Source: US-CERT/NIST

Overview

The (1) mamcache and (2) KVS token backends in OpenStack Identity (Keystone) Folsom 2012.2.x and Grizzly before 2013.1.4 do not properly compare the PKI token revocation list with PKI tokens, which allow remote attackers to bypass intended access restrictions via a revoked PKI token.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification

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External Source: OSVDB
Name: 97237
External Source: REDHAT
Name: RHSA-2013:1285
External Source: UBUNTU
Name: USN-2002-1
External Source: CONFIRM
Name: https://bugs.launchpad.net/keystone/+bug/1202952
Type: Advisory
External Source: MLIST
Name: [oss-security] 20130911 [OSSA 2013-025] Token revocation failure using Keystone memcache/KVS backends (CVE-2013-4294)
Type: Patch Information
External Source: SECUNIA
Name: 54706

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)