Slackware: GDM file permission vulnerability
Posted by LinuxSecurity.com Team   
Slackware This fixes a bug where a local user may read any system file by making a symlink to it from $HOME/.xsession-errors and using GDM's error browser to read the file.

[slackware-security]  GDM security update (SSA:2003-236-01)

Upgraded gdm packages are available for Slackware 9.0 and -current.
These fix a security issue where a local user may use GDM to read any
file on the system.


Here are the details from the Slackware 9.0 ChangeLog:
+--------------------------+
Sun Aug 24 14:36:29 PDT 2003
patches/packages/gdm-2.4.1.6-i386-1.tgz:  Upgraded to gdm-2.4.1.6.
  This fixes a bug where a local user may read any system file by making a
  symlink to it from $HOME/.xsession-errors and using GDM's error browser
  to read the file.
  (* Security fix *)
+--------------------------+



WHERE TO FIND THE NEW PACKAGES:
+-----------------------------+

Updated package for Slackware 9.0: 
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/gdm-2.4.1.6-i386-1.tgz

Updated package for Slackware -current: 
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/gnome/gdm-2.4.1.6-i486-1.tgz



MD5 SIGNATURES:
+-------------+

Slackware 9.0 package:
a5939f91ac56b5dd97d4a2013f099aed  gdm-2.4.1.6-i386-1.tgz

Slackware -current package:
26459fb6dec7279fe4d80aba0b3ac4ff  gdm-2.4.1.6-i486-1.tgz



INSTALLATION INSTRUCTIONS:
+------------------------+

Upgrade using upgradepkg (as root):
upgradepkg gdm-2.4.1.6-i386-1.tgz



+-----+

Slackware Linux Security Team 
http://slackware.com/gpg-key
security@slackware.com