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The SUSE operating system SSH daemon must encrypt forwarded remote X connections for interactive users.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-77473 | SLES-12-030260 | SV-92169r1_rule | High |
| Description |
|---|
| Open X displays allow an attacker to capture keystrokes and execute commands remotely. |
| STIG | Date |
|---|---|
| SLES 12 Security Technical Implementation Guide | 2019-03-12 |
Details
| Check Text ( C-77033r1_chk ) |
|---|
| Verify the SUSE operating system SSH daemon remote X forwarded connections for interactive users are encrypted. Check that SSH remote X forwarded connections are encrypted with the following command: # sudo grep -i x11forwarding /etc/ssh/sshd_config X11Forwarding yes If the "X11Forwarding" keyword is set to "no", is missing, or is commented out, this is a finding. |
| Fix Text (F-84115r1_fix) |
|---|
| Configure the SUSE operating system SSH daemon to encrypt forwarded X connections for interactive users. Edit the "/etc/ssh/sshd_config" file to uncomment or add the line for the "X11Forwarding" keyword and set its value to "yes" (this file may be named differently or be in a different location if using a version of SSH that is provided by a third-party vendor): X11Forwarding yes |