157 lines
5.4 KiB
Bash
Executable File
157 lines
5.4 KiB
Bash
Executable File
#!/bin/bash
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#
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# harbian-audit for Debian GNU/Linux 7/8/9/10 or CentOS Hardening
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#
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#
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# 8.1.7 Record Events That Modify the System's Mandatory Access Controls (Scored)
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# Modify by: Samson-W (sccxboy@gmail.com)
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#
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# todo test for centos
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set -u # One variable unset, it's over
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set -e # One error, it's over
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HARDENING_LEVEL=4
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SELINUX_PKG="selinux-basics"
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SELINUX_PKG_CENTOS="selinux-policy"
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APPARMOR_PKG="apparmor"
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FILE='/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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# Set default to apparmor
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AUDIT_PARAMS=$AA_AUDIT_PARAMS
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# define custom IFS and save default one
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d_IFS=$IFS
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IFS=$'\n'
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if [ $OS_RELEASE -eq 2 ]; then
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SELINUX_PKG=$SELINUX_PKG_CENTOS
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fi
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is_pkg_installed $SELINUX_PKG
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if [ $FNRET = 0 ]; then
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AUDIT_PARAMS=$SE_AUDIT_PARAMS
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info "SELinux has installed!"
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else
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is_pkg_installed $APPARMOR_PKG
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if [ $FNRET = 0 ]; then
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AUDIT_PARAMS=$AA_AUDIT_PARAMS
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info "Apparmor has installed!"
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else
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crit "SELinux and Apparmor not install!"
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fi
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fi
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for AUDIT_VALUE in $AUDIT_PARAMS; do
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debug "$AUDIT_VALUE should be in file $FILE"
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check_audit_path $AUDIT_VALUE
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if [ $FNRET -eq 1 ];then
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warn "path is not exsit! Please check file path is exist!"
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continue
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else
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does_pattern_exist_in_file $FILE "$AUDIT_VALUE"
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if [ $FNRET != 0 ]; then
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crit "$AUDIT_VALUE is not in file $FILE"
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else
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ok "$AUDIT_VALUE is present in $FILE"
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fi
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fi
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done
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IFS=$d_IFS
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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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d_IFS=$IFS
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IFS=$'\n'
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if [ $OS_RELEASE -eq 2 ]; then
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SELINUX_PKG=$SELINUX_PKG_CENTOS
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fi
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is_pkg_installed $SELINUX_PKG
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if [ $FNRET = 0 ]; then
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AUDIT_PARAMS=$SE_AUDIT_PARAMS
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info "SELinux has installed!"
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else
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is_pkg_installed $APPARMOR_PKG
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if [ $FNRET = 0 ]; then
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AUDIT_PARAMS=$AA_AUDIT_PARAMS
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info "Apparmor has installed!"
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else
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crit "SELinux and Apparmor not install!"
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fi
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fi
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for AUDIT_VALUE in $AUDIT_PARAMS; do
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debug "$AUDIT_VALUE should be in file $FILE"
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check_audit_path $AUDIT_VALUE
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if [ $FNRET -eq 1 ];then
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warn "path is not exsit! Please check file path is exist!"
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continue
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else
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does_pattern_exist_in_file $FILE "$AUDIT_VALUE"
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if [ $FNRET != 0 ]; then
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warn "$AUDIT_VALUE is not in file $FILE, adding it"
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add_end_of_file $FILE $AUDIT_VALUE
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check_auditd_is_immutable_mode
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else
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ok "$AUDIT_VALUE is present in $FILE"
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fi
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fi
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done
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IFS=$d_IFS
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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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if [ $DONT_AUDITD_BY_UID -eq 1 ]; then
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SE_AUDIT_PARAMS="-a always,exit -F dir=/etc/selinux/ -F perm=wa -k MAC-policy
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-a always,exit -F dir=/usr/share/selinux/ -F perm=wa -k MAC-policy
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-a always,exit -F path=/usr/bin/audit2allow -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/bin/chcon -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/bin/newrole -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/semanage -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/setsebool -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/restorecon -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/fixfiles -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/setenforce -F perm=wax -k MAC_Event
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-a always,exit -F path=/usr/sbin/setfiles -F perm=wax -k MAC_Event"
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AA_AUDIT_PARAMS='-w /etc/apparmor/ -p wa -k MAC-policy
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-w /etc/apparmor.d/ -p wa -k MAC-policy
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-a always,exit -F path=/sbin/apparmor_parser -F perm=x -k MAC-policy'
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else
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SE_AUDIT_PARAMS="-a always,exit -F dir=/etc/selinux/ -F perm=wa -k MAC-policy
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-a always,exit -F dir=/usr/share/selinux/ -F perm=wa -k MAC-policy
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-a always,exit -F path=/usr/bin/audit2allow -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/bin/chcon -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/bin/newrole -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/semanage -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/setsebool -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/restorecon -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/fixfiles -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/setenforce -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event
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-a always,exit -F path=/usr/sbin/setfiles -F perm=wax -F auid>=1000 -F auid!=4294967295 -k MAC_Event"
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AA_AUDIT_PARAMS='-w /etc/apparmor/ -p wa -k MAC-policy
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-w /etc/apparmor.d/ -p wa -k MAC-policy
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-a always,exit -F path=/sbin/apparmor_parser -F perm=x -F auid>=1000 -F auid!=4294967295 -k MAC-policy'
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fi
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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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. $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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