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https://github.com/ovh/debian-cis.git
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109 lines
3.4 KiB
Bash
Executable File
109 lines
3.4 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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# 4.1.1.2 Ensure system is disabled when audit logs are full (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="Disable system on audit log full."
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FILE='/etc/audit/auditd.conf'
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OPTIONS=''
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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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does_file_exist $FILE
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if [ "$FNRET" != 0 ]; then
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crit "$FILE does not exist"
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else
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ok "$FILE exists, checking configuration"
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for AUDIT_OPTION in $OPTIONS; do
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AUDIT_PARAM=$(echo "$AUDIT_OPTION" | cut -d= -f 1)
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AUDIT_VALUE=$(echo "$AUDIT_OPTION" | cut -d= -f 2)
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PATTERN="^${AUDIT_PARAM}[[:space:]]*=[[:space:]]*$AUDIT_VALUE"
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debug "$AUDIT_PARAM should be set to $AUDIT_VALUE"
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does_pattern_exist_in_file $FILE "$PATTERN"
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if [ "$FNRET" != 0 ]; then
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crit "$PATTERN is not present in $FILE"
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else
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ok "$PATTERN is present in $FILE"
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fi
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done
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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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does_file_exist $FILE
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if [ "$FNRET" != 0 ]; then
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warn "$FILE does not exist, creating it"
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touch $FILE
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else
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ok "$FILE exists"
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fi
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for AUDIT_OPTION in $OPTIONS; do
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AUDIT_PARAM=$(echo $AUDIT_OPTION | cut -d= -f 1)
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AUDIT_VALUE=$(echo $AUDIT_OPTION | cut -d= -f 2)
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debug "$AUDIT_PARAM should be set to $AUDIT_VALUE"
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PATTERN="^${AUDIT_PARAM}[[:space:]]*=[[:space:]]*$AUDIT_VALUE"
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does_pattern_exist_in_file $FILE "$PATTERN"
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if [ "$FNRET" != 0 ]; then
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warn "$PATTERN is not present in $FILE, adding it"
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does_pattern_exist_in_file $FILE "^$AUDIT_PARAM"
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if [ "$FNRET" != 0 ]; then
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info "Parameter $AUDIT_PARAM seems absent from $FILE, adding at the end"
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add_end_of_file $FILE "$AUDIT_PARAM = $AUDIT_VALUE"
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else
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info "Parameter $AUDIT_PARAM is present but with the wrong value -- Fixing"
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replace_in_file $FILE "^${AUDIT_PARAM}[[:space:]]*=.*" "$AUDIT_PARAM = $AUDIT_VALUE"
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fi
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else
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ok "$PATTERN is present in $FILE"
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fi
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done
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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create_config() {
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cat <<EOF
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# shellcheck disable=2034
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status=audit
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# Put here the conf for auditd
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OPTIONS='space_left_action=email action_mail_acct=root admin_space_left_action=halt'
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EOF
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$CIS_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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
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# shellcheck source=../../lib/main.sh
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. "$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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