Detections
Analytics

1.273 OL09-00-002348

Information

OL 9 SSH daemon must not allow rhosts authentication.

GROUP ID: V-271711
RULE ID: SV-271711r1091845

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

Solution

Configure the SSH daemon to not allow rhosts authentication.

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":

IgnoreRhosts 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-271711r1091845_rule, STIG-ID|OL09-00-002348, Vuln-ID|V-271711

Plugin: Unix

Control ID: 2639b78f43ccafa7741880378175aee8054cd52c8eb68cb046125bd767f45c7b