Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title Keystone vulnerabilities
Informations
Name USN-2002-1 First vendor Publication 2013-10-23
Vendor Ubuntu Last vendor Modification 2013-10-23
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:S/C:P/I:P/A:P)
Cvss Base Score 6.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 13.04 - Ubuntu 12.10

Summary:

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

Software Description: - keystone: OpenStack identity service

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)

Update instructions:

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

Ubuntu 13.04:
python-keystone 1:2013.1.3-0ubuntu1.1

Ubuntu 12.10:
python-keystone 2012.2.4-0ubuntu3.2

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

References:
http://www.ubuntu.com/usn/usn-2002-1
CVE-2013-4222, CVE-2013-4294

Package Information:
https://launchpad.net/ubuntu/+source/keystone/1:2013.1.3-0ubuntu1.1
https://launchpad.net/ubuntu/+source/keystone/2012.2.4-0ubuntu3.2

Original Source

Url : http://www.ubuntu.com/usn/USN-2002-1

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-522 Insufficiently Protected Credentials (CWE/SANS Top 25)
50 % CWE-264 Permissions, Privileges, and Access Controls

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:19297
 
Oval ID: oval:org.mitre.oval:def:19297
Title: USN-2002-1 -- keystone vulnerabilities
Description: Keystone would improperly grant access to invalid tokens under certain circumstances.
Family: unix Class: patch
Reference(s): USN-2002-1
CVE-2013-4222
CVE-2013-4294
 Version: 5
Platform(s): Ubuntu 13.04
Ubuntu 12.10
 Product(s): keystone
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 26
Application 1
Os 2
Os 1

Nessus® Vulnerability Scanner

Date Description
2013-10-24 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-2002-1.nasl - Type : ACT_GATHER_INFO
2013-09-23 Name : The remote Fedora host is missing a security update.
File : fedora_2013-16551.nasl - Type : ACT_GATHER_INFO

Alert History

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0
1
Date Informations
2014-02-17 12:02:40
  • Multiple Updates
2013-10-24 00:18:48
  • First insertion