1. Ubuntu Security Notices
  2. USN-2002-1

USN-2002-1: Keystone vulnerabilities

Publication date

23 October 2013

Overview

Keystone would improperly grant access to invalid tokens under certain circumstances.

Releases

Packages

Details

Chmouel Boudjnah discovered that Keystone did not properly invalidate user
tokens when a tenant was disabled which allowed an authenticated user to
retain access via the token. (CVE-2013-4222)

Kieran Spear discovered that Keystone did not properly verify PKI tokens
when performing revocation when using the memcache and KVS backends. An
authenticated attacker could exploit this to bypass intended access
restrictions. (CVE-2013-4294)

Chmouel Boudjnah discovered that Keystone did not properly invalidate user
tokens when a tenant was disabled which allowed an authenticated user to
retain access via the token. (CVE-2013-4222)

Kieran Spear discovered that Keystone did not properly verify PKI tokens
when performing revocation when using the memcache and KVS backends. An
authenticated attacker could exploit this to bypass intended access
restrictions. (CVE-2013-4294)

Update instructions

In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
13.04 raring python-keystone –  1:2013.1.3-0ubuntu1.1
12.10 quantal python-keystone –  2012.2.4-0ubuntu3.2

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References

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