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Category:   Application (Security)  >   XScreenSaver Vendors:   Zawinski, Jamie
(Oracle Issues Fix for Solaris) XScreenSaver LDAP Authentication Error Lets Physically Local Users Bypass the Password Feature
SecurityTracker Alert ID:  1030111
SecurityTracker URL:  http://securitytracker.com/id/1030111
CVE Reference:   CVE-2007-1859   (Links to External Site)
Date:  Apr 17 2014
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 5.02
Description:   A vulnerability was reported in XScreenSaver. A physically local user can bypass the password authentication feature.

When the target system uses a remote LDAP directory service for authentication and the LDAP service is unavailable for a long period of time, a physically local user can unlock the screen using an arbitrary password.

The vulnerability is due to a flaw in the way XScreenSaver parses a getpwuid(getuid()) function call.

Alex Yamauchi reported this vulnerability.

Impact:   A physically local user can bypass the screen saver password feature.
Solution:   Oracle has issued a fix for Solaris.

The Oracle advisory is available at:

https://blogs.oracle.com/sunsecurity/entry/cve_2007_1859_improper_authentication

Vendor URL:  www.jwz.org/xscreensaver/ (Links to External Site)
Cause:   Authentication error
Underlying OS:  UNIX (Solaris - SunOS)
Underlying OS Comments:  10

Message History:   This archive entry is a follow-up to the message listed below.
May 2 2007 XScreenSaver LDAP Authentication Error Lets Physically Local Users Bypass the Password Feature



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