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Gentoo Linux Security Advisory GLSA 200705-14 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: XScreenSaver: Privilege escalation |
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Date: May 13, 2007 |
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Bugs: #176584 |
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ID: 200705-14 |
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Synopsis |
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======== |
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|
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XScreenSaver allows local users to bypass authentication under certain |
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configurations. |
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Background |
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========== |
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|
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XScreenSaver is a widely used screen saver collection shipped on |
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systems running the X11 Window System. |
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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 x11-misc/xscreensaver < 5.02 >= 5.02 |
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Description |
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=========== |
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|
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XScreenSaver incorrectly handles the results of the getpwuid() function |
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in drivers/lock.c when using directory servers during a network outage. |
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Impact |
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====== |
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|
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A local user can crash XScreenSaver by preventing network connectivity |
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if the system uses a remote directory service for credentials such as |
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NIS or LDAP, which will unlock the screen. |
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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 XScreenSaver users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=x11-misc/xscreensaver-5.02" |
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References |
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========== |
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[ 1 ] CVE-2007-1859 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1859 |
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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-200705-14.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 2007 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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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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