mirror of
https://github.com/ovh/debian-cis.git
synced 2025-06-22 02:33:42 +02:00
Migrate generic checks from secaudit to cis-hardening
new file: 99.3.1_acc_shadow_sha512.sh new file: 99.3.2_acc_sudoers_no_all.sh new file: 99.4_net_fw_default_policy_drop.sh new file: 99.5.1_ssh_auth_pubk_only.sh new file: 99.5.2.1_ssh_cry_kex.sh new file: 99.5.2.2_ssh_cry_mac.sh new file: 99.5.2.3_ssh_cry_rekey.sh new file: 99.5.3_ssh_disable_features.sh new file: 99.5.4_ssh_keys_from.sh new file: 99.5.5_ssh_strict_modes.sh new file: 99.5.6_ssh_sys_accept_env.sh new file: 99.5.7_ssh_sys_no_legacy.sh new file: 99.5.8_ssh_sys_sandbox.sh new file: 99.5.9_ssh_log_level.sh Fix descriptions in comment section for 99.* secaudit checks Remove duplicated legacy services that are already taken care of by vanilla cis Enable custom configuration of checks in config-file, no more hard coded conf Add test to disable check if debian version is too old Add excused IPs while checking "from" field of authorized_keys Escaping dots in IPs Manage Kex for different debian versions Add tests for generic checks and add apply for ssh config Apply shellcheck recommendations on audit/hardening scripts Update script to check for allowed IPs only, remove bastion related Fill `apply` func for ssh config related scripts Add and update tests scenarii Disable shellcheck test for external source 1091 As of today, the entire project is not shellcheck compliant, I prefer disabling the test that warns about not finding external source (that arent compliant). I will enable it again when the project library will be shellchecked https://github.com/koalaman/shellcheck/wiki/SC1091 Refactor password policy check with one check by feature Previous file will now only look for bad passwords in /etc/shadow I added two checks that look for the compliant configuration lines in conf files /etc/logins.defs and /etc/pam.d/common-passwords FIX: merge chained sed and fix regex FIX: update regex to capture more output FIX: fix pattern to ignore commented lines, add apply Also add tests to ensure that commented lines are not detected as valid configuration CHORE: cleanup test situation with file and users removal IMP: add case insensitive option when looking for patterns in files CHORE: removed duplicated line in test file
This commit is contained in:
25
tests/hardening/99.3.1_acc_shadow_sha512.sh
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25
tests/hardening/99.3.1_acc_shadow_sha512.sh
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@ -0,0 +1,25 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 0
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register_test contain "There is no password in /etc/shadow"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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cp -a /etc/shadow /tmp/shadow.bak
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sed -i 's/secaudit:!/secaudit:mypassword/' /etc/shadow
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describe Fail: Found unsecure password
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register_test retvalshouldbe 1
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register_test contain "User secaudit has a password that is not SHA512 hashed"
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run unsecpasswd /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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mv /tmp/shadow.bak /etc/shadow
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chpasswd << EOF
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secaudit:mypassword
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EOF
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describe Pass: Found properly hashed password
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register_test retvalshouldbe 0
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register_test contain "User secaudit has suitable SHA512 hashed password"
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run sha512pass /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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28
tests/hardening/99.3.2_acc_sudoers_no_all.sh
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28
tests/hardening/99.3.2_acc_sudoers_no_all.sh
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@ -0,0 +1,28 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 0
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register_test contain "There is no carte-blanche sudo permission in"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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# Proceed to operation that will end up to a non compliant system
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useradd -s /bin/bash jeantestuser
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echo 'jeantestuser ALL = (ALL) NOPASSWD:ALL' >> /etc/sudoers.d/jeantestuser
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describe Fail: Not compliant system
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register_test retvalshouldbe 1
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register_test contain "[ KO ] jeantestuser ALL = (ALL) NOPASSWD:ALL is present in /etc/sudoers.d/jeantestuser"
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run userallcmd /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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# shellcheck disable=2016
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echo 'EXCEPT="$EXCEPT jeantestuser"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
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describe Adding jeantestuser to exceptions
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register_test retvalshouldbe 0
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register_test contain "[ OK ] jeantestuser ALL = (ALL) NOPASSWD:ALL is present in /etc/sudoers.d/jeantestuser but was EXCUSED because jeantestuser is part of exceptions"
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run userexcept /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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rm -f /etc/sudoers.d/jeantestuser
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userdel jeantestuser
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}
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9
tests/hardening/99.3.3_acc_pam_sha512.sh
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9
tests/hardening/99.3.3_acc_pam_sha512.sh
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@ -0,0 +1,9 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 0
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register_test contain "[ OK ] ^\s*password\s.+\s+pam_unix\.so\s+.*sha512 is present in /etc/pam.d/common-password"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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38
tests/hardening/99.3.4_acc_logindefs_sha512.sh
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38
tests/hardening/99.3.4_acc_logindefs_sha512.sh
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@ -0,0 +1,38 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 0
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register_test contain "ENCRYPT_METHOD SHA512 is present in /etc/login.defs"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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cp /etc/login.defs /tmp/login.defs.bak
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describe Line as comment
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sed -i 's/\(ENCRYPT_METHOD SHA512\)/# \1/' /etc/login.defs
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register_test retvalshouldbe 1
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register_test contain "SHA512 is not present"
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run commented /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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rm /etc/login.defs
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describe Fail: missing conf file
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register_test retvalshouldbe 1
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register_test contain "/etc/login.defs is not readable"
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run missconffile /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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cp /tmp/login.defs.bak /etc/login.defs
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sed -ir 's/ENCRYPT_METHOD[[:space:]]\+SHA512/ENCRYPT_METHOD MD5/' /etc/login.defs
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describe Fail: wrong hash function configuration
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register_test retvalshouldbe 1
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register_test contain "SHA512 is not present"
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run wrongconf /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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describe Checking resolved state
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mv /tmp/login.defs.bak /etc/login.defs
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register_test retvalshouldbe 0
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run sha512pass /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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29
tests/hardening/99.5.1_ssh_auth_pubk_only.sh
Normal file
29
tests/hardening/99.5.1_ssh_auth_pubk_only.sh
Normal file
@ -0,0 +1,29 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 1
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register_test contain "openssh-server is installed"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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# `apply` performs a service reload after each change in the config file
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# the service needs to be started for the reload to succeed
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service ssh start
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# if the audit script provides "apply" option, enable and run it
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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describe Checking resolved state
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register_test retvalshouldbe 0
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register_test contain "[ OK ] ^PubkeyAuthentication[[:space:]]+yes is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^PasswordAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^KbdInteractiveAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^KerberosAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^ChallengeResponseAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^HostbasedAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^GSSAPIAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^GSSAPIKeyExchange[[:space:]]+no is present in /etc/ssh/sshd_config"
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run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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|
29
tests/hardening/99.5.2.1_ssh_cry_kex.sh
Normal file
29
tests/hardening/99.5.2.1_ssh_cry_kex.sh
Normal file
@ -0,0 +1,29 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 1
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register_test contain "openssh-server is installed"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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# `apply` performs a service reload after each change in the config file
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# the service needs to be started for the reload to succeed
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service ssh start
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# if the audit script provides "apply" option, enable and run it
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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cp -a /etc/ssh/sshd_config /tmp/sshd_config.bak
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describe Change case of config line
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sed -i 's/\(KexAlgorithms\)/\U\1/' /etc/ssh/sshd_config
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register_test retvalshouldbe 0
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run uppercase /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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mv /tmp/sshd_config.bak /etc/ssh/sshd_config
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describe Checking resolved state
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register_test retvalshouldbe 0
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run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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|
22
tests/hardening/99.5.2.2_ssh_cry_mac.sh
Normal file
22
tests/hardening/99.5.2.2_ssh_cry_mac.sh
Normal file
@ -0,0 +1,22 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 1
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register_test contain "openssh-server is installed"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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# `apply` performs a service reload after each change in the config file
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# the service needs to be started for the reload to succeed
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service ssh start
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# if the audit script provides "apply" option, enable and run it
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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describe Checking resolved state
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register_test retvalshouldbe 0
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register_test contain "[ OK ] ^MACs[[:space:]]*umac-128-etm@openssh.com,umac-64-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128@openssh.com,umac-64@openssh.com,hmac-sha2-512,hmac-sha2-256 is present in /etc/ssh/sshd_config"
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run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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|
22
tests/hardening/99.5.2.3_ssh_cry_rekey.sh
Normal file
22
tests/hardening/99.5.2.3_ssh_cry_rekey.sh
Normal file
@ -0,0 +1,22 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 1
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register_test contain "openssh-server is installed"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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# `apply` performs a service reload after each change in the config file
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# the service needs to be started for the reload to succeed
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service ssh start
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# if the audit script provides "apply" option, enable and run it
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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describe Checking resolved state
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register_test retvalshouldbe 0
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register_test contain "[ OK ] ^RekeyLimit[[:space:]]*512M\s+6h is present in /etc/ssh/sshd_config"
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run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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}
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|
28
tests/hardening/99.5.3_ssh_disable_features.sh
Normal file
28
tests/hardening/99.5.3_ssh_disable_features.sh
Normal file
@ -0,0 +1,28 @@
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# run-shellcheck
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test_audit() {
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describe Running on blank host
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register_test retvalshouldbe 1
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register_test contain "openssh-server is installed"
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# shellcheck disable=2154
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run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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describe Correcting situation
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# `apply` performs a service reload after each change in the config file
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# the service needs to be started for the reload to succeed
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service ssh start
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||||
# if the audit script provides "apply" option, enable and run it
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sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
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/opt/debian-cis/bin/hardening/"${script}".sh || true
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|
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describe Checking resolved state
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register_test retvalshouldbe 0
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register_test contain "[ OK ] ^AllowAgentForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
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||||
register_test contain "[ OK ] ^AllowTcpForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^AllowStreamLocalForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
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register_test contain "[ OK ] ^PermitTunnel[[:space:]]*no is present in /etc/ssh/sshd_config
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"
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||||
register_test contain "[ OK ] ^PermitUserRC[[:space:]]*no is present in /etc/ssh/sshd_config"
|
||||
register_test contain "[ OK ] ^GatewayPorts[[:space:]]*no is present in /etc/ssh/sshd_config"
|
||||
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
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||||
}
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||||
|
50
tests/hardening/99.5.4_ssh_keys_from.sh
Normal file
50
tests/hardening/99.5.4_ssh_keys_from.sh
Normal file
@ -0,0 +1,50 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
dismiss_test
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||||
# shellcheck disable=2154
|
||||
run genconf /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
useradd -s /bin/bash jeantestuser
|
||||
describe Running on blank host
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "[WARN] secaudit has a valid shell but no authorized_keys file"
|
||||
register_test contain "[INFO] User jeantestuser has a valid shell"
|
||||
register_test contain "[INFO] User jeantestuser has no home directory"
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
mkdir -p /home/secaudit/.ssh
|
||||
touch /home/secaudit/.ssh/authorized_keys2
|
||||
describe empty authorized keys file
|
||||
register_test retvalshouldbe 0
|
||||
run emptyauthkey /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
ssh-keygen -t ed25519 -f /tmp/key1
|
||||
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
|
||||
describe Key without from field
|
||||
register_test retvalshouldbe 1
|
||||
run keynofrom /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
echo -n 'from="127.0.0.1" ' > /home/secaudit/.ssh/authorized_keys2
|
||||
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
|
||||
describe Key with from, no ip check
|
||||
register_test retvalshouldbe 0
|
||||
run keyfrom /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
# shellcheck disable=2016
|
||||
echo 'ALLOWED_IPS="$ALLOWED_IPS 127.0.0.1"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
echo -n 'from="10.0.1.2" ' >> /home/secaudit/.ssh/authorized_keys2
|
||||
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
|
||||
describe Key with from, filled allowed IPs, one bad ip
|
||||
register_test retvalshouldbe 1
|
||||
run badfromip /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
# shellcheck disable=2016
|
||||
echo 'ALLOWED_IPS="$ALLOWED_IPS 10.0.1.2"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
describe Key with from, filled allowed IPs, all IPs allowed
|
||||
register_test retvalshouldbe 0
|
||||
run allwdfromip /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
userdel jeantestuser
|
||||
}
|
||||
|
23
tests/hardening/99.5.5_ssh_strict_modes.sh
Normal file
23
tests/hardening/99.5.5_ssh_strict_modes.sh
Normal file
@ -0,0 +1,23 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
describe Running on blank host
|
||||
dismiss_count_for_test
|
||||
register_test retvalshouldbe 1
|
||||
register_test contain "openssh-server is installed"
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
describe Correcting situation
|
||||
# `apply` performs a service reload after each change in the config file
|
||||
# the service needs to be started for the reload to succeed
|
||||
service ssh start
|
||||
# if the audit script provides "apply" option, enable and run it
|
||||
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
/opt/debian-cis/bin/hardening/"${script}".sh || true
|
||||
|
||||
describe Checking resolved state
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "[ OK ] ^StrictModes[[:space:]]*yes is present in /etc/ssh/sshd_config"
|
||||
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
}
|
||||
|
30
tests/hardening/99.5.6_ssh_sys_accept_env.sh
Normal file
30
tests/hardening/99.5.6_ssh_sys_accept_env.sh
Normal file
@ -0,0 +1,30 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
describe Running on blank host
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "openssh-server is installed"
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
# Proceed to operation that will end up to a non compliant system
|
||||
describe Tests purposely failing
|
||||
sed -ri 's/^\s*AcceptEnv\s+LANG LC_\*//' /etc/ssh/sshd_config
|
||||
register_test retvalshouldbe 1
|
||||
register_test contain "[ KO ] ^\s*AcceptEnv\s+LANG LC_\* is not present in /etc/ssh/sshd_config"
|
||||
run noncompliant /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
|
||||
describe Correcting situation
|
||||
# `apply` performs a service reload after each change in the config file
|
||||
# the service needs to be started for the reload to succeed
|
||||
service ssh start
|
||||
# if the audit script provides "apply" option, enable and run it
|
||||
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
/opt/debian-cis/bin/hardening/"${script}".sh || true
|
||||
|
||||
describe Checking resolved state
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "[ OK ] ^\s*AcceptEnv\s+LANG LC_\* is present in /etc/ssh/sshd_config"
|
||||
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
}
|
||||
|
8
tests/hardening/99.5.7_ssh_sys_no_legacy.sh
Normal file
8
tests/hardening/99.5.7_ssh_sys_no_legacy.sh
Normal file
@ -0,0 +1,8 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
describe Running on blank host
|
||||
register_test retvalshouldbe 0
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
}
|
||||
|
22
tests/hardening/99.5.8_ssh_sys_sandbox.sh
Normal file
22
tests/hardening/99.5.8_ssh_sys_sandbox.sh
Normal file
@ -0,0 +1,22 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
describe Running on blank host
|
||||
register_test retvalshouldbe 1
|
||||
register_test contain "openssh-server is installed"
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
describe Correcting situation
|
||||
# `apply` performs a service reload after each change in the config file
|
||||
# the service needs to be started for the reload to succeed
|
||||
service ssh start
|
||||
# if the audit script provides "apply" option, enable and run it
|
||||
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
/opt/debian-cis/bin/hardening/"${script}".sh || true
|
||||
|
||||
describe Checking resolved state
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "[ OK ] ^UsePrivilegeSeparation[[:space:]]*sandbox is present in /etc/ssh/sshd_config"
|
||||
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
}
|
||||
|
22
tests/hardening/99.5.9_ssh_loglevel.sh
Normal file
22
tests/hardening/99.5.9_ssh_loglevel.sh
Normal file
@ -0,0 +1,22 @@
|
||||
# run-shellcheck
|
||||
test_audit() {
|
||||
describe Running on blank host
|
||||
register_test retvalshouldbe 1
|
||||
register_test contain "openssh-server is installed"
|
||||
# shellcheck disable=2154
|
||||
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
|
||||
describe Correcting situation
|
||||
# `apply` performs a service reload after each change in the config file
|
||||
# the service needs to be started for the reload to succeed
|
||||
service ssh start
|
||||
# if the audit script provides "apply" option, enable and run it
|
||||
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
|
||||
/opt/debian-cis/bin/hardening/"${script}".sh || true
|
||||
|
||||
describe Checking resolved state
|
||||
register_test retvalshouldbe 0
|
||||
register_test contain "[ OK ] ^LogLevel[[:space:]]*VERBOSE is present in /etc/ssh/sshd_config"
|
||||
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||
}
|
||||
|
@ -4,8 +4,6 @@
|
||||
set -e
|
||||
# stop on undefined variable
|
||||
set -u
|
||||
# debug
|
||||
#set -x
|
||||
|
||||
mytmpdir=$(mktemp -d -t debian-cis-test.XXXXXX)
|
||||
totalerrors=255
|
||||
|
Reference in New Issue
Block a user