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Last updated: 10/25/2014 9:29:36 AM

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Vulnerability Summary for CVE-2012-5571

Original release date: 12/17/2012
Last revised: 02/25/2013
Source: US-CERT/NIST

Overview

OpenStack Keystone Essex (2012.1) and Folsom (2012.2) does not properly handle EC2 tokens when the user role has been removed from a tenant, which allows remote authenticated users to bypass intended authorization restrictions by leveraging a token for the removed user role.

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 3.5 (LOW) (AV:N/AC:M/Au:S/C:N/I:P/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.8
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Required to exploit
Impact Type: Allows unauthorized modification

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External Source: XF
Name: keystone-tenant-sec-bypass(80333)
External Source: CONFIRM
Name: https://github.com/openstack/keystone/commit/37308dd4f3e33f7bd0f71d83fd51734d1870713b
Type: Patch Information
External Source: REDHAT
Name: RHSA-2012:1557
External Source: REDHAT
Name: RHSA-2012:1556
External Source: UBUNTU
Name: USN-1641-1
External Source: SECUNIA
Name: 51436
Type: Advisory
External Source: CONFIRM
Name: https://github.com/openstack/keystone/commit/9d68b40cb9ea818c48152e6c712ff41586ad9653
Type: Patch Information
External Source: BID
Name: 56726
External Source: CONFIRM
Name: https://bugs.launchpad.net/keystone/+bug/1064914
Type: Patch Information
External Source: SECUNIA
Name: 51423
Type: Advisory
External Source: CONFIRM
Name: https://github.com/openstack/keystone/commit/8735009dc5b895db265a1cd573f39f4acfca2a19
Type: Patch Information
External Source: FEDORA
Name: FEDORA-2012-19341
External Source: MLIST
Name: [oss-security] 20121128 [OSSA 2012-019] Extension of token validity through token chaining (CVE-2012-5563)
Type: Patch Information
External Source: MLIST
Name: [oss-security] 20121128 [OSSA 2012-018] EC2-style credentials invalidation issue (CVE-2012-5571)
Type: Patch Information

Technical Details

Vulnerability Type (View All)