mirror of
https://github.com/ovh/debian-cis.git
synced 2024-11-22 21:47:02 +01:00
810fee4c8f
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
80 lines
2.3 KiB
Bash
Executable File
80 lines
2.3 KiB
Bash
Executable File
#!/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
|