#!/bin/bash # # CIS Debian 7 Hardening # # # 8.1.10 Collect Discretionary Access Control Permission Modification Events (Scored) # set -e # One error, it's over set -u # One variable unset, it's over AUDIT_PARAMS='-a always,exit -F arch=b64 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b32 -S chmod -S fchmod -S fchmodat -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S chown -S fchown -S fchownat -S lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b32 -S chown -S fchown -S fchownat -S lchown -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b64 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod -a always,exit -F arch=b32 -S setxattr -S lsetxattr -S fsetxattr -S removexattr -S lremovexattr -S fremovexattr -F auid>=1000 -F auid!=4294967295 -k perm_mod' FILE='/etc/audit/audit.rules' # This function will be called if the script status is on enabled / audit mode audit () { IFS=$'\n' for AUDIT_VALUE in $AUDIT_PARAMS; do debug "$AUDIT_VALUE should be in file $FILE" does_pattern_exist_in_file $FILE $AUDIT_VALUE if [ $FNRET != 0 ]; then crit "$AUDIT_VALUE is not in file $FILE" else ok "$AUDIT_VALUE is present in $FILE" fi done } # This function will be called if the script status is on enabled mode apply () { IFS=$'\n' for AUDIT_VALUE in $AUDIT_PARAMS; do debug "$AUDIT_VALUE should be in file $FILE" does_pattern_exist_in_file $FILE $AUDIT_VALUE if [ $FNRET != 0 ]; then warn "$AUDIT_VALUE is not in file $FILE, adding it" add_end_of_file $FILE $AUDIT_VALUE eval $(pkill -HUP -P 1 auditd) else ok "$AUDIT_VALUE is present in $FILE" fi done } # This function will check config parameters required check_config() { : } # Source Root Dir Parameter if [ ! -r /etc/default/cis-hardening ]; then echo "There is no /etc/default/cis-hardening file, cannot source CIS_ROOT_DIR variable, aborting" exit 128 else . /etc/default/cis-hardening if [ -z ${CIS_ROOT_DIR:-} ]; then echo "No CIS_ROOT_DIR variable, aborting" exit 128 fi fi # Main function, will call the proper functions given the configuration (audit, enabled, disabled) if [ -r $CIS_ROOT_DIR/lib/main.sh ]; then . $CIS_ROOT_DIR/lib/main.sh else echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening" exit 128 fi