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https://github.com/ovh/debian-cis.git
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810fee4c8f
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
80 lines
2.3 KiB
Bash
Executable File
80 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# run-shellcheck
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#
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# OVH Security audit
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#
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#
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# Check that any password that may exist in /etc/shadow is SHA512 hashed and salted
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#
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set -e # One error, it's over
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set -u # One variable unset, it's over
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# shellcheck disable=2034
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DESCRIPTION="Check that any password that may exist in /etc/shadow is SHA512 hashed and salted"
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FILE="/etc/shadow"
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# This function will be called if the script status is on enabled / audit mode
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audit () {
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# Review shadow file for existing passwords
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pw_found=""
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users_reviewed=""
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if $SUDO_CMD [ ! -r "$FILE" ]; then
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crit "$FILE is not readable"
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return
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fi
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for line in $($SUDO_CMD cut -d ":" -f 1,2 /etc/shadow); do
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users_reviewed+="$line "
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user=$(echo "$line" | cut -d ":" -f 1)
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passwd=$(echo "$line" | cut -d ":" -f 2)
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if [[ $passwd = '!' || $passwd = '*' ]]; then
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continue
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# Check password against $6$<salt>$<encrypted>, see `man 3 crypt`
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elif [[ $passwd =~ ^\$6\$[a-zA-Z0-9./]{2,16}\$[a-zA-Z0-9./]{86}$ ]]; then
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pw_found+="$user "
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ok "User $user has suitable SHA512 hashed password."
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else
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pw_found+="$user "
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crit "User $user has a password that is not SHA512 hashed."
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fi
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done
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if [[ -z "$users_reviewed" ]]; then
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crit "No users were reviewed in $FILE !"
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return
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fi
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if [[ -z "$pw_found" ]]; then
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ok "There is no password in $FILE"
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fi
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}
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# This function will be called if the script status is on enabled mode
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apply () {
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:
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_ROOT_DIR" ]; then
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echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
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echo "Cannot source CIS_ROOT_DIR variable, aborting."
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exit 128
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fi
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# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
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if [ -r "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=/opt/debian-cis/lib/main.sh
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. "$CIS_ROOT_DIR"/lib/main.sh
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else
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echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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