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All .Xauthority files must have mode 0600 or less permissive.


Overview

Finding ID Version Rule ID IA Controls Severity
V-216074 SOL-11.1-020510 SV-216074r603268_rule Medium
Description
.Xauthority files ensure the user is authorized to access the specific X Windows host. Excessive permissions may permit unauthorized modification of these files, which could lead to Denial of Service to authorized access or allow unauthorized access to be obtained.
STIG Date
Solaris 11 X86 Security Technical Implementation Guide 2021-11-23

Details

Check Text ( C-17312r372604_chk )
If X Display Manager (XDM) is not used on the system, this is not applicable.

Determine if XDM is running.

Procedure:
# ps -ef | grep xdm

Check the file permissions for the .Xauthority files in the home directories of users of X. Procedure:
# cd ~
# ls -lL .Xauthority

If the file mode is more permissive than 0600, this is finding.
Fix Text (F-17310r372605_fix)
Change the mode of the .Xauthority files.

Procedure:
# chmod 0600 .Xauthority