============================================================================ Ubuntu Security Notice USN-1854-1 June 05, 2013 libx11 vulnerabilities ============================================================================ A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 13.04 - Ubuntu 12.10 - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS Summary: Several security issues were fixed in libx11. Software Description: - libx11: X11 client-side library Details: Ilja van Sprundel discovered multiple security issues in various X.org libraries and components. An attacker could use these issues to cause applications to crash, resulting in a denial of service, or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 13.04: libx11-6 2:1.5.0-1ubuntu1.1 Ubuntu 12.10: libx11-6 2:1.5.0-1ubuntu0.1 Ubuntu 12.04 LTS: libx11-6 2:1.4.99.1-0ubuntu2.1 Ubuntu 10.04 LTS: libx11-6 2:1.3.2-1ubuntu3.1 After a standard system update you need to restart your session to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1854-1 CVE-2013-1981, CVE-2013-1997, CVE-2013-2004 Package Information: https://launchpad.net/ubuntu/+source/libx11/2:1.5.0-1ubuntu1.1 https://launchpad.net/ubuntu/+source/libx11/2:1.5.0-1ubuntu0.1 https://launchpad.net/ubuntu/+source/libx11/2:1.4.99.1-0ubuntu2.1 https://launchpad.net/ubuntu/+source/libx11/2:1.3.2-1ubuntu3.1