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Ubuntu alert USN-1262-1 (lightdm)
========================================================================== Ubuntu Security Notice USN-1262-1 November 15, 2011 lightdm vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 11.10 Summary: Several security issues were fixed in Light Display Manager. Software Description: - lightdm: Display Manager Details: It was discovered that Light Display Manager incorrectly handled privileges when reading .dmrc files. A local attacker could exploit this issue to read arbitrary configuration files, bypassing intended permissions. (CVE-2011-3153) It was discovered that Light Display Manager incorrectly handled links when adjusting permissions on .Xauthority files. A local attacker could exploit this issue to access arbitrary files, and possibly obtain increased privileges. In the default Ubuntu installation, this would be prevented by the Yama link restrictions. (CVE-2011-4105) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 11.10: liblightdm-gobject-1-0 1.0.6-0ubuntu1.1 liblightdm-qt-1-0 1.0.6-0ubuntu1.1 lightdm 1.0.6-0ubuntu1.1 After a standard system update you need to reboot your computer to make all the necessary changes. References: http://www.ubuntu.com/usn/usn-1262-1 CVE-2011-3153, CVE-2011-4105 Package Information: https://launchpad.net/ubuntu/+source/lightdm/1.0.6-0ubunt... -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security... (Log in to post comments)
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