mirror of
https://github.com/ovh/debian-cis.git
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86 lines
2.4 KiB
Bash
Executable File
86 lines
2.4 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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# 4.1.17 Ensure kernel module loading and unloading is 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="Collect kernel module loading and unloading."
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AUDIT_PARAMS='-w /sbin/insmod -p x -k modules
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-w /sbin/rmmod -p x -k modules
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-w /sbin/modprobe -p x -k modules
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-a always,exit -F arch=b64 -S init_module -S delete_module -k modules'
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FILE='/etc/audit/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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# define custom IFS and save default one
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d_IFS=$IFS
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c_IFS=$'\n'
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IFS=$c_IFS
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for AUDIT_VALUE in $AUDIT_PARAMS; do
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debug "$AUDIT_VALUE should be in file $FILE"
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IFS=$d_IFS
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does_pattern_exist_in_file "$FILE" "$AUDIT_VALUE"
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IFS=$c_IFS
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if [ "$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 $FILE"
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fi
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done
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IFS=$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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IFS=$'\n'
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for AUDIT_VALUE in $AUDIT_PARAMS; do
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debug "$AUDIT_VALUE should be in file $FILE"
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does_pattern_exist_in_file "$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" "$AUDIT_VALUE"
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eval "$(pkill -HUP -P 1 auditd)"
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else
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ok "$AUDIT_VALUE is present in $FILE"
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fi
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done
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}
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# This function will check config parameters required
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check_config() {
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:
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}
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# Source Root Dir Parameter
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if [ -r /etc/default/cis-hardening ]; then
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# shellcheck source=../../debian/default
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. /etc/default/cis-hardening
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fi
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if [ -z "$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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