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27c2317ec2
auth_ssh_password_authentication_disable check and fix updated. ChallengeResponseAuthentication was replaced with KbdInteractiveAuthentication. Updated fix to write to sshd_config.d/01-mscp-sshd.sshd_config Updated check to read from sshd -T Issue #223
87 lines
2.0 KiB
YAML
87 lines
2.0 KiB
YAML
id: auth_ssh_password_authentication_disable
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title: "Disable Password Authentication for SSH"
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discussion: |
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If remote login through SSH is enabled, password based authentication _MUST_ be disabled for user login.
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All users _MUST_ go through multifactor authentication to prevent unauthenticated access and potential compromise to the system.
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NOTE: /etc/ssh/sshd_config will be automatically modified to its original state following any update or major upgrade to the operating system.
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check: |
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/usr/sbin/sshd -T | /usr/bin/grep -Ec '^(passwordauthentication\s+no|kbdinteractiveauthentication\s+no)'
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result:
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integer: 2
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fix: |
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[source,bash]
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----
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include_dir=$(/usr/bin/awk '/^Include/ {print $2}' /etc/ssh/sshd_config | /usr/bin/tr -d '*')
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if [[ -z $include_dir ]]; then
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/usr/bin/sed -i.bk "1s/.*/Include \/etc\/ssh\/sshd_config.d\/\*/" /etc/ssh/sshd_config
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fi
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echo "passwordauthentication no" >> "${include_dir}01-mscp-sshd.conf"
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echo "kbdinteractiveauthentication no" >> "${include_dir}01-mscp-sshd.conf"
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for file in $(ls ${include_dir}); do
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if [[ "$file" == "100-macos.conf" ]]; then
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continue
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fi
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if [[ "$file" == "01-mscp-sshd.conf" ]]; then
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break
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fi
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/bin/mv ${include_dir}${file} ${include_dir}20-${file}
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done
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----
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references:
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cce:
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- CCE-91740-1
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cci:
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- N/A
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800-53r5:
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- IA-2(1)
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- IA-2(2)
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- IA-2(6)
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- IA-2
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- IA-5(2)
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- MA-4
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- IA-2(8)
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800-53r4:
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- IA-2
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- IA-2(1)
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- IA-2(2)
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- IA-2(3)
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- IA-2(4)
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- IA-2(6)
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- IA-2(11)
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- IA-5(2)
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- IA-5(11)
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- MA-4
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srg:
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- N/A
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disa_stig:
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- N/A
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800-171r2:
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- 3.5.1
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- 3.5.2
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- 3.5.3
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- 3.7.5
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cis:
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benchmark:
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- N/A
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controls v8:
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- 6.3
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- 6.4
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- 6.5
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macOS:
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- "13.0"
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tags:
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- 800-53r5_low
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- 800-53r5_moderate
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- 800-53r5_high
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- 800-53r4_low
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- 800-53r4_moderate
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- 800-53r4_high
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- 800-171
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- cnssi-1253
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- cisv8
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mobileconfig: false
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mobileconfig_info:
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