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← Back to Solaris 11 SPARC Security Technical Implementation Guide

V-216310

CAT II (Medium)

The .Xauthority files must not have extended ACLs.

Rule ID

SV-216310r959010_rule

STIG

Solaris 11 SPARC Security Technical Implementation Guide

Version

V3R5

CCIs

CCI-000225CCI-000366

Discussion

.Xauthority files ensure the user is authorized to access the specific X Windows host. Extended ACLs may permit unauthorized modification of these files, which could lead to Denial of Service to authorized access or allow unauthorized access to be obtained.

Check Content

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. 
# ls -lL .Xauthority

If the permissions include a "+", the file has an extended ACL and this is a finding.

Fix Text

Remove the extended ACL from the file.

# chmod A- .Xauthority