macOS 15 - Sequoia

The macOS system must set login grace time to 30

STIG ID: APPL-15-000053 | SRG: SRG-OS-000163-GPOS-00072 | Severity: Medium | CCI: CCI-001133 | Vulnerability ID: V-268437

Description

If SSHD is enabled, it must be configured to wait only 30 seconds before timing out login attempts.NOTE: /etc/ssh/sshd_config will be automatically modified to its original state following any update or major upgrade to the operating system.

Check

C-268437r1034251_chk

Verify the macOS system is configured to set Login Grace Time to 30 with the following command:/usr/sbin/sshd -G | /usr/bin/awk '/logingracetime/{print $2}'If the result is not "30", this is a finding.

Fix

F-72368r1034250_fix

Configure the macOS system to set Login Grace Time to 30 with the following command:include_dir=$(/usr/bin/awk '/^Include/ {print $2}' /etc/ssh/sshd_config | /usr/bin/tr -d '*')if [[ -z $include_dir ]]; then /usr/bin/sed -i.bk "1s/.*/Include \/etc\/ssh\/sshd_config.d\/\*/" /etc/ssh/sshd_configfi/usr/bin/grep -qxF 'logingracetime 30' "${include_dir}01-mscp-sshd.conf" 2>/dev/null || echo "logingracetime 30" >> "${include_dir}01-mscp-sshd.conf"for file in $(ls ${include_dir}); do if [[ "$file" == "100-macos.conf" ]]; then continue fi if [[ "$file" == "01-mscp-sshd.conf" ]]; then break fi /bin/mv ${include_dir}${file} ${include_dir}20-${file}done