Detections
Analytics

1.276 OL09-00-002351

Information

OL 9 SSH daemon must perform strict mode checking of home directory configuration files.

GROUP ID: V-271714
RULE ID: SV-271714r1091854

If other users have access to modify user-specific SSH configuration files, they may be able to log into the system as another user.

Solution

Configure the SSH daemon to perform strict mode checking of home directory configuration files.

Add the following line to "/etc/ssh/sshd_config" or to a file in "/etc/ssh/sshd_config.d" or uncomment the line and set the value to "yes":

StrictModes yes

The SSH service must be restarted for changes to take effect:

$ sudo systemctl restart sshd.service

See Also

https://workbench.cisecurity.org/benchmarks/27024

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CCI|CCI-000366, Rule-ID|SV-271714r1091854_rule, STIG-ID|OL09-00-002351, Vuln-ID|V-271714

Plugin: Unix

Control ID: 4838f3134d7a457175457ac12254324b3ab7f29d15dfb9253ec636924cf66ccd