mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-22 13:37:02 +01:00
100 lines
3.0 KiB
Bash
Executable File
100 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 1.5.1 Ensure core dumps are restricted (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
HARDENING_LEVEL=2
|
|
DESCRIPTION="Restrict core dumps."
|
|
|
|
LIMIT_FILE='/etc/security/limits.conf'
|
|
LIMIT_DIR='/etc/security/limits.d'
|
|
LIMIT_PATTERN='^\*[[:space:]]*hard[[:space:]]*core[[:space:]]*0$'
|
|
SYSCTL_PARAM='fs.suid_dumpable'
|
|
SYSCTL_EXP_RESULT=0
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit () {
|
|
SEARCH_RES=0
|
|
LIMIT_FILES=""
|
|
if $SUDO_CMD [ -d $LIMIT_DIR ]; then
|
|
for file in $($SUDO_CMD ls $LIMIT_DIR/*.conf 2>/dev/null); do
|
|
LIMIT_FILES="$LIMIT_FILES $LIMIT_DIR/$file"
|
|
done
|
|
fi
|
|
debug "Files to search $LIMIT_FILE $LIMIT_FILES"
|
|
for file in $LIMIT_FILE $LIMIT_FILES; do
|
|
does_pattern_exist_in_file $file $LIMIT_PATTERN
|
|
if [ $FNRET != 0 ]; then
|
|
debug "$LIMIT_PATTERN not present in $file"
|
|
else
|
|
ok "$LIMIT_PATTERN present in $file"
|
|
SEARCH_RES=1
|
|
break
|
|
fi
|
|
done
|
|
if [ $SEARCH_RES = 0 ]; then
|
|
crit "$LIMIT_PATTERN is not present in $LIMIT_FILE $LIMIT_FILES"
|
|
fi
|
|
has_sysctl_param_expected_result "$SYSCTL_PARAM" "$SYSCTL_EXP_RESULT"
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT"
|
|
elif [ $FNRET = 255 ]; then
|
|
warn "$SYSCTL_PARAM does not exist -- Typo?"
|
|
else
|
|
ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
does_pattern_exist_in_file $LIMIT_FILE $LIMIT_PATTERN
|
|
if [ $FNRET != 0 ]; then
|
|
warn "$LIMIT_PATTERN not present in $LIMIT_FILE, adding at the end of $LIMIT_FILE"
|
|
add_end_of_file $LIMIT_FILE "* hard core 0"
|
|
else
|
|
ok "$LIMIT_PATTERN present in $LIMIT_FILE"
|
|
fi
|
|
has_sysctl_param_expected_result "$SYSCTL_PARAM" "$SYSCTL_EXP_RESULT"
|
|
if [ $FNRET != 0 ]; then
|
|
warn "$SYSCTL_PARAM was not set to $SYSCTL_EXP_RESULT -- Fixing"
|
|
set_sysctl_param $SYSCTL_PARAM $SYSCTL_EXP_RESULT
|
|
elif [ $FNRET = 255 ]; then
|
|
warn "$SYSCTL_PARAM does not exist -- Typo?"
|
|
else
|
|
ok "$SYSCTL_PARAM correctly set to $SYSCTL_EXP_RESULT"
|
|
fi
|
|
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
:
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$CIS_ROOT_DIR" ]; then
|
|
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
|
|
echo "Cannot source CIS_ROOT_DIR variable, aborting."
|
|
exit 128
|
|
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
|