mirror of
https://github.com/ovh/debian-cis.git
synced 2024-12-23 14:35:26 +01:00
80 lines
2.3 KiB
Bash
80 lines
2.3 KiB
Bash
|
#!/bin/bash
|
||
|
|
# run-shellcheck
|
||
|
|
#
|
||
|
|
# OVH Security audit
|
||
|
|
#
|
||
|
|
|
||
|
|
#
|
||
|
|
# Check that any password that may exist in /etc/shadow is SHA512 hashed and salted
|
||
|
|
#
|
||
|
|
|
||
|
|
set -e # One error, it's over
|
||
|
|
set -u # One variable unset, it's over
|
||
|
|
|
||
|
|
# shellcheck disable=2034
|
||
|
|
DESCRIPTION="Check that any password that may exist in /etc/shadow is SHA512 hashed and salted"
|
||
|
|
FILE="/etc/shadow"
|
||
|
|
|
||
|
|
|
||
|
|
# This function will be called if the script status is on enabled / audit mode
|
||
|
|
audit () {
|
||
|
|
# Review shadow file for existing passwords
|
||
|
|
pw_found=""
|
||
|
|
users_reviewed=""
|
||
|
|
if $SUDO_CMD [ ! -r "$FILE" ]; then
|
||
|
|
crit "$FILE is not readable"
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
for line in $($SUDO_CMD cut -d ":" -f 1,2 /etc/shadow); do
|
||
|
|
users_reviewed+="$line "
|
||
|
|
user=$(echo "$line" | cut -d ":" -f 1)
|
||
|
|
passwd=$(echo "$line" | cut -d ":" -f 2)
|
||
|
|
if [[ $passwd = '!' || $passwd = '*' ]]; then
|
||
|
|
continue
|
||
|
|
# Check password against $6$<salt>$<encrypted>, see `man 3 crypt`
|
||
|
|
elif [[ $passwd =~ ^\$6\$[a-zA-Z0-9./]{2,16}\$[a-zA-Z0-9./]{86}$ ]]; then
|
||
|
|
pw_found+="$user "
|
||
|
|
ok "User $user has suitable SHA512 hashed password."
|
||
|
|
else
|
||
|
|
pw_found+="$user "
|
||
|
|
crit "User $user has a password that is not SHA512 hashed."
|
||
|
|
fi
|
||
|
|
done
|
||
|
|
if [[ -z "$users_reviewed" ]]; then
|
||
|
|
crit "No users were reviewed in $FILE !"
|
||
|
|
return
|
||
|
|
fi
|
||
|
|
if [[ -z "$pw_found" ]]; then
|
||
|
|
ok "There is no password in $FILE"
|
||
|
|
fi
|
||
|
|
}
|
||
|
|
|
||
|
|
# This function will be called if the script status is on enabled mode
|
||
|
|
apply () {
|
||
|
|
:
|
||
|
|
}
|
||
|
|
|
||
|
|
# This function will check config parameters required
|
||
|
|
check_config() {
|
||
|
|
:
|
||
|
|
}
|
||
|
|
|
||
|
|
# Source Root Dir Parameter
|
||
|
|
if [ -r /etc/default/cis-hardening ]; then
|
||
|
|
. /etc/default/cis-hardening
|
||
|
|
fi
|
||
|
|
if [ -z "$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
|