Finding ID | Version | Rule ID | IA Controls | Severity |
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V-257992 | RHEL-09-255080 | SV-257992r952190_rule | Medium |
Description |
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SSH trust relationships mean a compromise on one host can allow an attacker to move trivially to other hosts. |
STIG | Date |
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Red Hat Enterprise Linux 9 Security Technical Implementation Guide | 2024-02-19 |
Check Text ( C-61733r952189_chk ) |
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Verify the operating system does not allow a noncertificate trusted host SSH logon to the system with the following command: $ sudo /usr/sbin/sshd -dd 2>&1 | awk '/filename/ {print $4}' | tr -d '\r' | tr '\n' ' ' | xargs sudo grep -iH '^\s*hostbasedauthentication' HostbasedAuthentication no If the "HostbasedAuthentication" keyword is not set to "no", is missing, or is commented out, this is a finding. If the required value is not set, this is a finding. |
Fix Text (F-61657r925962_fix) |
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To configure RHEL 9 to not allow a noncertificate trusted host SSH logon to the system add or modify the following line in "/etc/ssh/sshd_config". HostbasedAuthentication no Restart the SSH daemon for the settings to take effect: $ sudo systemctl restart sshd.service |