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Category:   Application (Generic)  >   Xdm Vendors:   X.org
Xdm May Let Local Users View the Error Log Files of a Target User
SecurityTracker Alert ID:  1017015
SecurityTracker URL:  http://securitytracker.com/id/1017015
CVE Reference:   CVE-2006-5215   (Links to External Site)
Updated:  Dec 17 2006
Original Entry Date:  Oct 9 2006
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in xdm. A local user may be able to view error logs of other users.

A local user can exploit a race condition in the setting of file access permissions on the xdm error log file ($HOME/.xsession-errors) to read the error log file of a target user.

A local user can also exploit a race condition in the setting of file access permissions on the alternate xdm error log file (${TMP-/tmp}/xses-$USER) to read the error log file of a target user.

Steven Bellovin reported these vulnerabilities.

The original reports are available at:

http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=32804
http://www.netbsd.org/cgi-bin/query-pr-single.pl?number=32805

Impact:   A local user may be able to view the error log file of other users.
Solution:   A fix for the freedesktop.org implementation is available via CVS.
Cause:   Access control error, State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 9 2006 (Sun Issues Fix for Solaris 10) Xdm May Let Local Users View the Error Log Files of a Target User
Sun has issued a fix for Solaris 10 and described a workaround for Solaris 8 and 9.



 Source Message Contents



[Original Message Not Available for Viewing]


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