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.Xauthority or X*.hosts (or equivalent) file(s) must be used to restrict access to the X server.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-12016 | GEN005220 | SV-37684r1_rule | ECCD-1 ECCD-2 | Medium |
| Description |
|---|
| If access to the X server is not restricted, a user's X session may be compromised. |
| STIG | Date |
|---|---|
| Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2017-03-01 |
Details
| Check Text ( C-36875r1_chk ) |
|---|
| Determine if the X server is running. Procedure: # ps -ef |grep X Determine if xauth is being used. Procedure: # xauth xauth> list If the above command sequence does not show any host other than the localhost, then xauth is not being used. Search the system for an X*.hosts file, where "*" is a display number used to limit X window connections. If no files are found, X*.hosts files are not being used. If the X*.hosts files contain any unauthorized hosts, this is a finding. If both xauth and X*.hosts files are not being used, this is a finding. |
| Fix Text (F-31858r1_fix) |
|---|
| Create an X*.hosts file, where "*" is a display number used to limit X window connections. Add the list of authorized X clients to the file. |