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ef05f97f77
Update record_mac_edit.sh to be compliant with debian11 and debian12 CIS recommendations. fix issue #195
88 lines
2.8 KiB
Bash
Executable File
88 lines
2.8 KiB
Bash
Executable File
#!/bin/bash
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# run-shellcheck
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#
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# CIS Debian Hardening
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#
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#
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# Ensure that events that modify the system's Mandatory Access Controls are collected (Scored)
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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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HARDENING_LEVEL=4
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# shellcheck disable=2034
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DESCRIPTION="Record events that modify the system's mandatory access controls (MAC)."
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AUDIT_PARAMS=("-w /etc/apparmor/ -p wa -k MAC-policy" "-w /etc/apparmor.d/ -p wa -k MAC-policy")
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AUDIT_FILE='/etc/audit/audit.rules'
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ADDITIONAL_PATH="/etc/audit/rules.d"
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FILE_TO_WRITE='/etc/audit/rules.d/audit.rules'
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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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MISSING_PARAMS=()
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index=0
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# use find here in order to simplify test usage with sudo using secaudit user
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FILES_TO_SEARCH="$(sudo_wrapper find $ADDITIONAL_PATH -name '*.rules' | paste -s) $AUDIT_FILE"
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for i in "${!AUDIT_PARAMS[@]}"; do
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debug "${AUDIT_PARAMS[i]} should be in file $FILES_TO_SEARCH"
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SEARCH_RES=0
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for FILE_SEARCHED in $FILES_TO_SEARCH; do
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does_pattern_exist_in_file "$FILE_SEARCHED" "${AUDIT_PARAMS[i]}"
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if [ "$FNRET" != 0 ]; then
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debug "${AUDIT_PARAMS[i]} is not in file $FILE_SEARCHED"
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else
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ok "${AUDIT_PARAMS[i]} is present in $FILE_SEARCHED"
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SEARCH_RES=1
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fi
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done
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if [ "$SEARCH_RES" = 0 ]; then
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crit "${AUDIT_PARAMS[i]} is not present in $FILES_TO_SEARCH"
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MISSING_PARAMS[i]="${AUDIT_PARAMS[i]}"
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index=$((index + 1))
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fi
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done
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}
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# This function will be called if the script status is on enabled mode
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apply() {
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audit
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changes=0
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for i in "${!MISSING_PARAMS[@]}"; do
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info "${MISSING_PARAMS[i]} is not present in $FILES_TO_SEARCH, adding it"
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add_end_of_file "$FILE_TO_WRITE" "${MISSING_PARAMS[i]}"
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changes=1
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done
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[ "$changes" -eq 0 ] || eval "$(pkill -HUP -P 1 auditd)"
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_LIB_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_LIB_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 "${CIS_LIB_DIR}"/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "${CIS_LIB_DIR}"/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_LIB_DIR in /etc/default/cis-hardening"
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exit 128
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fi
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