The TOSS SSH daemon must perform strict mode checking of home directory configuration files.
An XCCDF Rule
Description
If other users have access to modify user-specific SSH configuration files, they may be able to log on to the system as another user.
- ID
- SV-253106r991589_rule
- Version
- TOSS-04-040650
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Configure SSH to perform strict mode checking of home directory configuration files. Uncomment the "StrictModes" keyword in "/etc/ssh/sshd_config" and set the value to "yes":
StrictModes yes
The SSH daemon must be restarted for the changes to take effect. To restart the SSH daemon, run the following command:
$ sudo systemctl restart sshd.service