Detections
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1.335 RHEL-10-700630

Information

RHEL 10 must not allow a noncertificate trusted host Secure Shell (SSH) login to the system.

GROUP ID: V-281266RULE ID: SV-281266r1184766

SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts.

OpenSSH uses the first occurrence of a keyword it sees, and drop-in files are read in lexicographical order at the start of the configuration. Red Hat recommends using drop-in files rather than changing base configuration files.

Solution

Configure RHEL 10 to not allow a noncertificate trusted host SSH login to the system.

In "/etc/ssh/sshd_config.d", create a drop file that will lexicographically precede 50-redhat.conf and add the following line:

HostbasedAuthentication no

Restart the SSH daemon with the following command for the settings to take effect:

$ sudo systemctl restart sshd.service

See Also

https://workbench.cisecurity.org/benchmarks/26403

Item Details

Category: ACCESS CONTROL

References: 800-53|AC-3, CAT|II, CCI|CCI-000213, Rule-ID|SV-281266r1184766_rule, STIG-ID|RHEL-10-700630, Vuln-ID|V-281266

Plugin: Unix

Control ID: 3a19166c1af7d40ab05ba9fd5a1b04fdeb90762905ee062df59418939e100e1b