- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200804-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: gnome-screensaver: Privilege escalation Date: April 11, 2008 Bugs: #213940 ID: 200804-12 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== gnome-screensaver allows local users to bypass authentication under certain configurations. Background ========== gnome-screensaver is a screensaver, designed to integrate with the Gnome desktop, that can replace xscreensaver. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 gnome-extra/gnome-screensaver < 2.20.0-r3 >= 2.20.0-r3 Description =========== gnome-screensaver incorrectly handles the results of the getpwuid() function in the file src/setuid.c when using directory servers (like NIS) during a network outage, a similar issue to GLSA 200705-14. Impact ====== A local user can crash gnome-xscreensaver by preventing network connectivity if the system uses a remote directory service for credentials such as NIS or LDAP, which will unlock the screen. Workaround ========== There is no known workaround at this time. Resolution ========== All gnome-screensaver users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=gnome-extra/gnome-screensaver-2.20.0-r3" References ========== [ 1 ] CVE-2008-0887 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0887 [ 2 ] GLSA 200705-14 http://www.gentoo.org/security/en/glsa/glsa-200705-14.xml Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200804-12.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@xxxxxxxxxx or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2008 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5
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