GLSA 200705-14: XScreenSaver: Privilege escalation
| Severity: | normal |
| Title: | XScreenSaver: Privilege escalation |
| Date: | 05/13/2007 |
| Bugs: | |
| ID: | 200705-14 |
Synopsis
XScreenSaver allows local users to bypass authentication under certain configurations.Background
XScreenSaver is a widely used screen saver collection shipped on systems running the X11 Window System.
Affected packages
| Package | Vulnerable | Unaffected | Architecture(s) |
|---|---|---|---|
| x11-misc/xscreensaver | < 5.02 | >= 5.02 | All supported architectures |
Description
XScreenSaver incorrectly handles the results of the getpwuid() function in drivers/lock.c when using directory servers during a network outage.
Impact
A local user can crash 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 XScreenSaver users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-misc/xscreensaver-5.02"
References
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.
License
Copyright 2010 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.