mirror of
https://github.com/ovh/debian-cis.git
synced 2024-12-04 12:38:18 +01:00
73616af4eb
* syslog-ng : fix remote host test and enhance Regex fixes #124 * enh: add test for 4.2.1.6
125 lines
3.9 KiB
Bash
Executable File
125 lines
3.9 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 4.2.1.6 Ensure remote syslog-ng messages are only accepted on designated log hosts. (Not Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
# shellcheck disable=2034
|
|
HARDENING_LEVEL=3
|
|
# shellcheck disable=2034
|
|
DESCRIPTION="Configure syslog to accept remote syslog messages only on designated log hosts."
|
|
|
|
PACKAGE='syslog-ng'
|
|
SYSLOG_BASEDIR='/etc/syslog-ng'
|
|
REMOTE_HOST=""
|
|
PATTERN='source[[:alnum:][:space:]*_*{]+(tcp|network|udp)[[:space:]]*\([[:space:]]*\"?[[:alnum:]\-.]+\"?.'
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit() {
|
|
is_pkg_installed "$PACKAGE"
|
|
if [ "$FNRET" != 0 ]; then
|
|
crit "$PACKAGE is not installed!"
|
|
else
|
|
FOUND=0
|
|
FILES="$SYSLOG_BASEDIR/syslog-ng.conf $($SUDO_CMD find -L "$SYSLOG_BASEDIR"/conf.d/ -type f)"
|
|
for FILE in $FILES; do
|
|
does_pattern_exist_in_file_multiline "$FILE" "$PATTERN"
|
|
if [ "$FNRET" = 0 ]; then
|
|
FOUND=1
|
|
fi
|
|
done
|
|
|
|
if [[ "$REMOTE_HOST" ]] && [[ "$REMOTE_HOST" != 'false' ]]; then
|
|
info "This is the remote host, checking that it only accepts logs from specified zone"
|
|
if [ "$FOUND" = 1 ]; then
|
|
ok "$PATTERN is present in $FILES"
|
|
else
|
|
crit "$PATTERN is not present in $FILES"
|
|
fi
|
|
else
|
|
info "This is the not the remote host checking that it doesn't accept remote logs"
|
|
if [ "$FOUND" = 1 ]; then
|
|
crit "$PATTERN is present in $FILES"
|
|
else
|
|
ok "$PATTERN is not present in $FILES"
|
|
fi
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply() {
|
|
is_pkg_installed "$PACKAGE"
|
|
if [ "$FNRET" != 0 ]; then
|
|
crit "$PACKAGE is not installed!"
|
|
else
|
|
FOUND=0
|
|
FILES="$SYSLOG_BASEDIR/syslog-ng.conf $(find -L "$SYSLOG_BASEDIR"/conf.d/ -type f)"
|
|
for FILE in $FILES; do
|
|
does_pattern_exist_in_file_multiline "$FILE" "$PATTERN"
|
|
if [ "$FNRET" = 0 ]; then
|
|
FOUND=1
|
|
fi
|
|
done
|
|
|
|
if [[ "$REMOTE_HOST" ]] && [[ "$REMOTE_HOST" != 'false' ]]; then
|
|
info "This is the remote host, checking that it only accepts logs from specified zone"
|
|
if [ "$FOUND" = 1 ]; then
|
|
ok "$PATTERN is present in $FILES"
|
|
else
|
|
crit "$PATTERN is not present in $FILES, setup the machine to receive the logs"
|
|
fi
|
|
else
|
|
info "This is the not the remote host checking that it doesn't accept remote logs"
|
|
if [ "$FOUND" = 1 ]; then
|
|
warn "$PATTERN is present in $FILES, "
|
|
else
|
|
ok "$PATTERN is not present in $FILES"
|
|
fi
|
|
fi
|
|
fi
|
|
}
|
|
|
|
# This function will create the config file for this check with default values
|
|
create_config() {
|
|
cat <<EOF
|
|
status=audit
|
|
SYSLOG_BASEDIR='/etc/syslog-ng'
|
|
# Put here if it's the remote host or not
|
|
REMOTE_HOST=false
|
|
EOF
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
:
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
# shellcheck source=../../debian/default
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$CIS_LIB_DIR" ]; then
|
|
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment."
|
|
echo "Cannot source CIS_LIB_DIR variable, aborting."
|
|
exit 128
|
|
fi
|
|
|
|
# Main function, will call the proper functions given the configuration (audit, enabled, disabled)
|
|
if [ -r "${CIS_LIB_DIR}"/main.sh ]; then
|
|
# shellcheck source=../../lib/main.sh
|
|
. "${CIS_LIB_DIR}"/main.sh
|
|
else
|
|
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_LIB_DIR in /etc/default/cis-hardening"
|
|
exit 128
|
|
fi
|