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1.226 RHEL-09-255120

Information

RHEL 9 SSH private host key files must have mode 0640 or less permissive.

GROUP ID: V-258000
RULE ID: SV-258000r1045063

If an unauthorized user obtains the private SSH host key file, the host could be impersonated.

Solution

Configure the mode of SSH private host key files under "/etc/ssh" to "0640" with the following command:

$ sudo chmod 0640 /etc/ssh/ssh_host*key

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-258000r1045063_rule, STIG-ID|RHEL-09-255120, Vuln-ID|V-258000

Plugin: Unix

Control ID: 53895526d756094465199cf6dfbf48fa7ce0c7a8a5d0530bc3d6bdccb432891d