mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-26 23:41:08 +01:00
d2bbf754ac
new file: 99.3.1_acc_shadow_sha512.sh new file: 99.3.2_acc_sudoers_no_all.sh new file: 99.4_net_fw_default_policy_drop.sh new file: 99.5.1_ssh_auth_pubk_only.sh new file: 99.5.2.1_ssh_cry_kex.sh new file: 99.5.2.2_ssh_cry_mac.sh new file: 99.5.2.3_ssh_cry_rekey.sh new file: 99.5.3_ssh_disable_features.sh new file: 99.5.4_ssh_keys_from.sh new file: 99.5.5_ssh_strict_modes.sh new file: 99.5.6_ssh_sys_accept_env.sh new file: 99.5.7_ssh_sys_no_legacy.sh new file: 99.5.8_ssh_sys_sandbox.sh new file: 99.5.9_ssh_log_level.sh Fix descriptions in comment section for 99.* secaudit checks Remove duplicated legacy services that are already taken care of by vanilla cis Enable custom configuration of checks in config-file, no more hard coded conf Add test to disable check if debian version is too old Add excused IPs while checking "from" field of authorized_keys Escaping dots in IPs Manage Kex for different debian versions Add tests for generic checks and add apply for ssh config Apply shellcheck recommendations on audit/hardening scripts Update script to check for allowed IPs only, remove bastion related Fill `apply` func for ssh config related scripts Add and update tests scenarii Disable shellcheck test for external source 1091 As of today, the entire project is not shellcheck compliant, I prefer disabling the test that warns about not finding external source (that arent compliant). I will enable it again when the project library will be shellchecked https://github.com/koalaman/shellcheck/wiki/SC1091 Refactor password policy check with one check by feature Previous file will now only look for bad passwords in /etc/shadow I added two checks that look for the compliant configuration lines in conf files /etc/logins.defs and /etc/pam.d/common-passwords FIX: merge chained sed and fix regex FIX: update regex to capture more output FIX: fix pattern to ignore commented lines, add apply Also add tests to ensure that commented lines are not detected as valid configuration CHORE: cleanup test situation with file and users removal IMP: add case insensitive option when looking for patterns in files CHORE: removed duplicated line in test file
100 lines
3.1 KiB
Bash
Executable File
100 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
|
|
# run-shellcheck
|
|
#
|
|
# OVH Security audit
|
|
#
|
|
|
|
#
|
|
# Checks there are no carte-blanche authorization in sudoers file(s).
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
# shellcheck disable=2034
|
|
DESCRIPTION="Checks there are no carte-blanche authorization in sudoers file(s)."
|
|
|
|
FILE="/etc/sudoers"
|
|
DIRECTORY="/etc/sudoers.d"
|
|
# spaces will be expanded to [:space:]* when using the regex
|
|
# improves readability in audit report
|
|
REGEX="ALL = \( ALL( : ALL)? \)( NOPASSWD:)? ALL"
|
|
EXCEPT=""
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit () {
|
|
FILES=""
|
|
if $SUDO_CMD [ ! -r "$FILE" ]; then
|
|
crit "$FILE is not readable"
|
|
return
|
|
fi
|
|
FILES="$FILE"
|
|
if $SUDO_CMD [ ! -d "$DIRECTORY" ]; then
|
|
debug "$DIRECTORY does not exist"
|
|
elif $SUDO_CMD [ ! -x "$DIRECTORY" ]; then
|
|
crit "Cannot browse $DIRECTORY"
|
|
else
|
|
FILES="$FILES $($SUDO_CMD ls -1 $DIRECTORY | sed s=^=$DIRECTORY/= )"
|
|
fi
|
|
for file in $FILES; do
|
|
if $SUDO_CMD [ ! -r "$file" ]; then
|
|
crit "$file is not readable"
|
|
else
|
|
# shellcheck disable=2001
|
|
if ! $SUDO_CMD grep -E "$(echo "$REGEX" | sed 's/ /[[:space:]]*/g')" "$file" &> /dev/null ; then
|
|
ok "There is no carte-blanche sudo permission in $file"
|
|
else
|
|
# shellcheck disable=2001
|
|
RET=$($SUDO_CMD grep -E "$(echo "$REGEX" | sed 's/ /[[:space:]]*/g')" "$file" | sed 's/\t/#/g;s/ /#/g' )
|
|
for line in $RET; do
|
|
if grep -q "$(echo "$line" | cut -d '#' -f 1)" <<< "$EXCEPT" ; then
|
|
# shellcheck disable=2001
|
|
ok "$(echo "$line" | sed 's/#/ /g') is present in $file but was EXCUSED because $(echo "$line" | cut -d '#' -f 1) is part of exceptions."
|
|
continue
|
|
fi
|
|
# shellcheck disable=2001
|
|
crit "$(echo "$line" | sed 's/#/ /g') is present in $file"
|
|
done
|
|
fi
|
|
fi
|
|
done
|
|
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
:
|
|
}
|
|
|
|
# This function will create the config file for this check with default values
|
|
create_config() {
|
|
cat <<EOF
|
|
status=disabled
|
|
# Put EXCEPTION account names here, space separated
|
|
EXCEPT="root %root %sudo %wheel"
|
|
EOF
|
|
}
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
:
|
|
}
|
|
|
|
# Source Root Dir Parameter
|
|
if [ -r /etc/default/cis-hardening ]; then
|
|
. /etc/default/cis-hardening
|
|
fi
|
|
if [ -z "$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 "$CIS_ROOT_DIR"/lib/main.sh ]; then
|
|
# shellcheck source=/opt/debian-cis/lib/main.sh
|
|
. "$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
|