Red Hat Bugzilla – Bug 467569
gnome-screensaver allows bypass of password entry if autologin is enabled
Last modified: 2015-01-14 18:21:57 EST
Description of problem:
If F9 has a autologin user enabled, and the user locks the screen, gnome-screensaver allows bypass of authentication via the "Switch User" button.
Version-Release number of selected component (if applicable):
Configure the /etc/gdm/custom.conf for autologin. Here is a sample entry :
Steps to Reproduce:
1. Restart X ; user is automatically logged in.
2. Use the menu "System->Lockscreen". The screen appears locked.
3. Wiggle the mouse to see the authentication dialog.
4. Click "Switch User". First time : the Desktop appears with no password entry.
5. Repeat steps 2,3. Click "Switch User". Second (or more) times : A user selection dialog appears.
6. Select the "Automatic Login" user. The Desktop appears with no password entry.
Entry to the desktop from the locked screensaver is performed with no password required.
Entry to desktop is password protected.
gconf-editor apparently has keys to disable user switching, but they currently have no effect in F9.
Some other distros (Ubuntu) had this problem and it has been fixed :
Renaming /usr/bin/gdmflexiserver (as suggested in the ubuntu bug report) appears to disable the user switching.
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