Detections
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1.208 RHEL-09-255035

Information

RHEL 9 SSHD must accept public key authentication.

GROUP ID: V-257983
RULE ID: SV-257983r1045024

Without the use of multifactor authentication, the ease of access to privileged functions is greatly increased. Multifactor authentication requires using two or more factors to achieve authentication. A privileged account is defined as an information system account with authorizations of a privileged user. A DOD common access card (CAC) with DOD-approved PKI is an example of multifactor authentication.

Satisfies: SRG-OS-000105-GPOS-00052, SRG-OS-000106-GPOS-00053, SRG-OS-000107-GPOS-00054, SRG-OS-000108-GPOS-00055

Solution

To configure the system, add or modify the following line in "/etc/ssh/sshd_config" or in a file in "/etc/ssh/sshd_config.d".

PubkeyAuthentication yes

Restart the SSH daemon for the settings to take effect:

$ sudo systemctl restart sshd.service

See Also

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

Item Details

Category: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-2, 800-53|IA-2(1), 800-53|IA-2(2), 800-53|IA-2(3), 800-53|IA-2(4), CAT|II, CCI|CCI-000765, CCI|CCI-000766, CCI|CCI-000767, CCI|CCI-000768, Rule-ID|SV-257983r1045024_rule, STIG-ID|RHEL-09-255035, Vuln-ID|V-257983

Plugin: Unix

Control ID: 77ddeb23ea5aa401eae34c12a5f3666297388b08f80a84e65b55f02390ca59fc