mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-22 13:37:02 +01:00
119 lines
3.2 KiB
Bash
Executable File
119 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# run-shellcheck
|
|
#
|
|
# CIS Debian Hardening
|
|
#
|
|
|
|
#
|
|
# 5.2.2 Ensure permissions on SSH private host key files are configured (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
HARDENING_LEVEL=1
|
|
DESCRIPTION="Checking permissions and ownership to root 600 for ssh private keys. "
|
|
|
|
DIR='/etc/ssh'
|
|
PERMISSIONS='600'
|
|
USER='root'
|
|
GROUP='root'
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit () {
|
|
ERRORS=0
|
|
for FILE in $($SUDO_CMD find $DIR -xdev -type f -name 'ssh_host_*_key');
|
|
do
|
|
has_file_correct_permissions $FILE $PERMISSIONS
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$FILE permissions were set to $PERMISSIONS"
|
|
else
|
|
ERRORS=$((ERRORS+1))
|
|
crit "$FILE permissions were not set to $PERMISSIONS"
|
|
fi
|
|
|
|
done
|
|
|
|
if [ $ERRORS = 0 ]; then
|
|
ok "SSH private keys in $DIR have correct permissions"
|
|
fi
|
|
|
|
ERRORS=0
|
|
for FILE in $($SUDO_CMD find $DIR -xdev -type f -name 'ssh_host_*_key');
|
|
do
|
|
has_file_correct_ownership $FILE $USER $GROUP
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$FILE ownership was set to $USER:$GROUP"
|
|
|
|
else
|
|
ERRORS=$((ERRORS+1))
|
|
crit "$FILE ownership was not set to $USER:$GROUP"
|
|
fi
|
|
done
|
|
|
|
if [ $ERRORS = 0 ]; then
|
|
ok "SSH private keys in $DIR have correct ownership"
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
for FILE in $($SUDO_CMD find $DIR -xdev -type f -name 'ssh_host_*_key');
|
|
do
|
|
has_file_correct_ownership $FILE $USER $GROUP
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$FILE ownership was set to $USER:$GROUP"
|
|
else
|
|
warn "fixing $DIR SSH private keys permissions to $USER:$GROUP"
|
|
chown $USER:$GROUP $FILE
|
|
|
|
fi
|
|
done
|
|
|
|
for FILE in $($SUDO_CMD find $DIR -xdev -type f -name 'ssh_host_*_key');
|
|
do
|
|
has_file_correct_permissions $FILE $PERMISSIONS
|
|
if [ $FNRET = 0 ]; then
|
|
ok "$FILE permissions were set to $PERMISSIONS"
|
|
else
|
|
warn "fixing $DIR SSH private keys ownership to $PERMISSIONS"
|
|
chmod 0$PERMISSIONS $FILE
|
|
fi
|
|
done
|
|
|
|
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
does_user_exist $USER
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$USER does not exist"
|
|
exit 128
|
|
fi
|
|
does_group_exist $GROUP
|
|
if [ $FNRET != 0 ]; then
|
|
crit "$GROUP does not exist"
|
|
exit 128
|
|
fi
|
|
}
|
|
|
|
# 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
|