Detections
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1.227 RHEL-09-255125

Information

RHEL 9 SSH public host key files must have mode 0644 or less permissive.

GROUP ID: V-258001
RULE ID: SV-258001r991589

If a public host key file is modified by an unauthorized user, the SSH service may be compromised.

Solution

Change the mode of public host key files under "/etc/ssh" to "0644" with the following command:

$ sudo chmod 0644 /etc/ssh/*key.pub

Restart the SSH daemon for the changes to take effect:

$ sudo systemctl restart sshd.service

See Also

https://workbench.cisecurity.org/benchmarks/22008

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-258001r991589_rule, STIG-ID|RHEL-09-255125, Vuln-ID|V-258001

Plugin: Unix

Control ID: 8b34dd9e0fdda18cdb5ca40fd5e6de5cbd31f6d75830b8093121fe99f54cc251