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