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1.332 RHEL-10-700600

Information

RHEL 10 must be configured so that SSHD accepts public key authentication.

GROUP ID: V-281263
RULE ID: SV-281263r1184763

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.

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.

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

Solution

Configure RHEL 10 to accept public key authentication.

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

PubkeyAuthentication yes

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: IDENTIFICATION AND AUTHENTICATION

References: 800-53|IA-2(1), 800-53|IA-2(2), CAT|II, CCI|CCI-000765, CCI|CCI-000766, Rule-ID|SV-281263r1184763_rule, STIG-ID|RHEL-10-700600, Vuln-ID|V-281263

Plugin: Unix

Control ID: 8ee3253c008c59bd5441619b1d55a13200922f61ce39aed9be40887c41c0a82e