N/A - USN-688-1

Executive Summary

Summary
Title	Compiz vulnerability

Informations
Name	USN-688-1	First vendor Publication	2008-12-09
Vendor	Ubuntu	Last vendor Modification	2008-12-09
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 :
Cvss Base Score	Not Defined	Attack Range	Not Defined
Cvss Impact Score	Not Defined	Attack Complexity	Not Defined
Cvss Expoit Score	Not Defined	Authentication	Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects the following Ubuntu releases:

Ubuntu 7.10 Ubuntu 8.04 LTS Ubuntu 8.10

This advisory also applies to the corresponding versions of Kubuntu, Edubuntu, and Xubuntu.

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

Ubuntu 7.10:
compiz-fusion-plugins-main 0.5.2+git20070928-0ubuntu2.2

Ubuntu 8.04 LTS:
compiz-fusion-plugins-main 0.7.4-0ubuntu6.2

Ubuntu 8.10:
compiz-fusion-plugins-main 0.7.8-0ubuntu2.2

After a standard system upgrade you need to restart your session to effect the necessary changes.

Details follow:

It was discovered that the Expo plugin for Compiz did not correctly restrict the screensaver window from being moved with the mouse. A local attacker could use the mouse to move the screensaver off the screen and gain access to the locked desktop session underneath. Default installs of Ubuntu were not vulnerable as Expo does not come pre-configured with mouse bindings.