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Migrate generic checks from secaudit to cis-hardening

Browse Source 
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
This commit is contained in:
Charles Herlin 2017-12-20 15:14:30 +01:00
parent ba93159a00
commit 810fee4c8f
34 changed files with 1959 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
bin/hardening/99.3.1_acc_shadow_sha512.sh Executable file
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#!/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

99
bin/hardening/99.3.2_acc_sudoers_no_all.sh Executable file
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#!/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

62
bin/hardening/99.3.3_acc_pam_sha512.sh Executable file
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#!/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"
CONF_FILE="/etc/pam.d/common-password"
CONF_LINE="^\s*password\s.+\s+pam_unix\.so\s+.*sha512"
# This function will be called if the script status is on enabled / audit mode
audit () {
# Check conf file for default SHA512 hash
if $SUDO_CMD [ ! -r $CONF_FILE ]; then
crit "$CONF_FILE is not readable"
else
does_pattern_exist_in_file $CONF_FILE "$(sed 's/ /[[:space:]]+/g' <<< "$CONF_LINE")"
if [ "$FNRET" = 0 ]; then
ok "$CONF_LINE is present in $CONF_FILE"
else
crit "$CONF_LINE is not present in $CONF_FILE"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply () {
:
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

76
bin/hardening/99.3.4_acc_logindefs_sha512.sh Executable file
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#!/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"
CONF_FILE="/etc/login.defs"
CONF_LINE="ENCRYPT_METHOD SHA512"
# This function will be called if the script status is on enabled / audit mode
audit () {
# Check conf file for default SHA512 hash
if $SUDO_CMD [ ! -r $CONF_FILE ]; then
crit "$CONF_FILE is not readable"
else
does_pattern_exist_in_file $CONF_FILE "^ *${CONF_LINE/ /[[:space:]]+}"
if [ "$FNRET" = 0 ]; then
ok "$CONF_LINE is present in $CONF_FILE"
else
crit "$CONF_LINE is not present in $CONF_FILE"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply () {
does_pattern_exist_in_file $CONF_FILE "^ *${CONF_LINE/ /[[:space:]]+}"
if [ "$FNRET" = 0 ]; then
ok "$CONF_LINE is present in $CONF_FILE"
else
warn "$CONF_LINE is not present in $CONF_FILE, adding it"
does_pattern_exist_in_file "$CONF_FILE" "^$(echo "$CONF_LINE" | cut -d ' ' -f1)"
if [ "$FNRET" != 0 ]; then
add_end_of_file $CONF_FILE "$CONF_LINE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file "$CONF_FILE" "^$(echo "$CONF_LINE" | cut -d ' ' -f1)[[:space:]]*.*" "$CONF_LINE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

78
bin/hardening/99.4_net_fw_default_policy_drop.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# Check iptables firewall default policy for DROP on INPUT and FORWARD.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Check iptables firewall default policy for DROP on INPUT and FORWARD."
PACKAGE="iptables"
FW_CHAINS="INPUT FORWARD"
FW_POLICY="DROP"
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ipt=$($SUDO_CMD $PACKAGE -nL || true )
if [[ -z $ipt ]]; then
crit "Empty return from $PACKAGE command. Aborting..."
return
fi
for chain in $FW_CHAINS; do
regex="Chain $chain \(policy ([A-Z]+)\)"
# previous line will capture actual policy
if [[ $ipt =~ $regex ]]; then
actual_policy=${BASH_REMATCH[1]}
if [[ $actual_policy == "$FW_POLICY" ]]; then
ok "Policy correctly set to $FW_POLICY for chain $chain"
else
crit "Policy set to $actual_policy for chain $chain, should be ${FW_POLICY}."
fi
else
echo "cant find chain $chain"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
:
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

97
bin/hardening/99.5.1_ssh_auth_pubk_only.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# Ensure that sshd only allows authentication through public key.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Ensure that sshd only allows authentication through public key."
PACKAGE='openssh-server'
FILE='/etc/ssh/sshd_config'
OPTIONS='PubkeyAuthentication=yes PasswordAuthentication=no KbdInteractiveAuthentication=no KerberosAuthentication=no ChallengeResponseAuthentication=no HostbasedAuthentication=no GSSAPIAuthentication=no GSSAPIKeyExchange=no '
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]+$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]+$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]+.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

117
bin/hardening/99.5.2.1_ssh_cry_kex.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# Checking key exchange ciphers.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Checking key exchange ciphers."
PACKAGE='openssh-server'
OPTIONS=''
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
create_config() {
get_debian_major_version
set +u
debug "Debian version : $DEB_MAJ_VER "
if [[ -z $DEB_MAJ_VER ]] || [[ 7 -eq $DEB_MAJ_VER ]]; then
KEX='diffie-hellman-group-exchange-sha256'
elif [[ 8 -eq $DEB_MAJ_VER ]] || [[ 9 -eq $DEB_MAJ_VER ]]; then
KEX='curve25519-sha256@libssh.org,diffie-hellman-group-exchange-sha256'
else
KEX='diffie-hellman-group-exchange-sha256'
fi
set -u
cat <<EOF
status=disabled
# Put your KexAlgorithms
OPTIONS="KexAlgorithms=$KEX"
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

107
bin/hardening/99.5.2.2_ssh_cry_mac.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# Checking Message Authentication Code ciphers for preferred UMAC and SHA-256|512 with Encrypt-Then-Mac (etm) setting.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Checking Message Authentication Code ciphers for preferred UMAC and SHA-256|512 with Encrypt-Then-Mac (etm) setting."
PACKAGE='openssh-server'
OPTIONS=''
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will create the config file for this check with default values
create_config() {
cat <<EOF
status=disabled
# Put your MACs
OPTIONS="MACs=umac-128-etm@openssh.com,umac-64-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128@openssh.com,umac-64@openssh.com,hmac-sha2-512,hmac-sha2-256"
EOF
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

113
bin/hardening/99.5.2.3_ssh_cry_rekey.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# Checking rekey limit for time (6 hours) or volume (512Mio) whichever comes first.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Checking rekey limit for time (6 hours) or volume (512Mio) whichever comes first."
PACKAGE='openssh-server'
OPTIONS='RekeyLimit=512M\s+6h'
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
get_debian_major_version
set +u
debug "Debian version : $DEB_MAJ_VER "
if [[ -z $DEB_MAJ_VER ]]; then
set -u
crit "Cannot get Debian version. Aborting..."
return
fi
if [[ "${DEB_MAJ_VER}" -lt "8" ]]; then
set -u
warn "Debian version too old (${DEB_MAJ_VER}), check does not apply, you should disable this check."
return
fi
set -u
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
SSH_VALUE=$(sed 's/\\s+/ /' <<< "$SSH_VALUE")
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

96
bin/hardening/99.5.3_ssh_disable_features.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# Check all special features in sshd_config are disabled
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
DESCRIPTION="Check all special features in sshd_config are disabled"
PACKAGE='openssh-server'
FILE='/etc/ssh/sshd_config'
OPTIONS='AllowAgentForwarding=no AllowTcpForwarding=no AllowStreamLocalForwarding=no PermitTunnel=no PermitUserRC=no GatewayPorts=no'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo "$SSH_OPTION" | cut -d= -f 1)
SSH_VALUE=$(echo "$SSH_OPTION" | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

174
bin/hardening/99.5.4_ssh_keys_from.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# Check <from> field in ssh authorized keys files for users with login shell, and bastions IP if available.
#
set -e # One error, it is over
set -u # One variable unset, it is over
# shellcheck disable=2034
DESCRIPTION="Check <from> field in ssh authorized keys files for users with login shell, and allowed IP if available."
# Regex looking for empty, hash starting lines, or 'from="127.127.127,127.127.127" ssh'
# shellcheck disable=2089
REGEX="^(from=(?:'|\")(,?(\d{1,3}(\.\d{1,3}){3}))+(?:'|\")\s+ssh|#|$)"
AUTHKEYFILE_PATTERN=""
AUTHKEYFILE_PATTERN_DEFAULT=".ssh/authorized_keys .ssh/authorized_keys2"
ALLOWED_IPS=""
ALLOWED_NOLOGIN_SHELLS="/bin/false /usr/sbin/nologin"
# Check functions
check_ip() {
file=$1
if [ -z "$ALLOWED_IPS" ]; then
warn "No allowed IPs to treat";
return ;
fi
for line in $($SUDO_CMD grep -ne "from" "$file" | tr -s " " | sed 's/ /_/g' ); do
linum=$(echo "$line" | cut -d ':' -f 1)
ips=$(echo "$line" | cut -d '"' -f 2 | tr ',' ' ')
ok_ips_allowed=""
bad_ips=""
for ip in $ips; do
ip_escaped=$(sed 's/\./\\./g' <<< "$ip")
if grep -qw "$ip_escaped" <<< $ALLOWED_IPS ; then
debug "Line $linum of $file allows access from exused IP (${ip})."
ok_ips_allowed+="$ip "
else
debug "Line $linum of $file allows access from ip ($ip) that is not allowed."
bad_ips+="$ip "
fi
done
ok_ips=$( sed 's/ $//' <<< "${ok_ips_allowed}")
bad_ips=$( sed 's/ $//' <<< "${bad_ips}")
if [[ -z $bad_ips ]]; then
if [[ ! -z $ok_ips ]]; then
ok "Line $linum of $file allows ssh access only from allowed IPs ($ok_ips)."
fi
else
crit "Line $linum of $file allows ssh access from (${bad_ips}) that are not allowed."
if [[ ! -z $ok_ips ]]; then
ok "Line $linum of $file allows ssh access from at least allowed IPs ($ok_ips)."
fi
fi
done
}
check_file() {
file=$1
if $SUDO_CMD [ ! -e "$file" ]; then debug "$file does not exist"; return; fi
if $SUDO_CMD [ -r "$file" ]; then
debug "Treating $file"
FOUND_AUTHKF=1
if $SUDO_CMD grep -vqP "$REGEX" "${file}" ; then
bad_lines="$(grep -vnP "$REGEX" "${file}" | cut -d ':' -f 1 | tr '\n' ' ' | sed 's/ $//' )"
crit "There are anywhere access keys in ${file} at lines (${bad_lines})."
else
ok "File ${file} is cleared from anywhere access keys."
check_ip "$file"
fi
else
crit "Cannot read ${file} for ${user}."
fi
}
check_dir() {
directory=$1
if $SUDO_CMD [ ! -x "$directory" ]; then
crit "Cannot read ${directory}."
return
fi
for file in $AUTHKEYFILE_PATTERN; do
check_file "${directory}"/${file}
done
}
# This function will be called if the script status is on enabled / audit mode
audit () {
# Retrieve authorized_key file pattern from sshd_config
if $SUDO_CMD [ ! -r /etc/ssh/sshd_config ]; then
crit "/etc/ssh/sshd_config is not readable."
else
ret=$($SUDO_CMD grep -iP "^AuthorizedKeysFile" /etc/ssh/sshd_config || echo '#KO' )
if [ "x$ret" = "x#KO" ]; then
debug "No AuthorizedKeysFile defined in sshd_config."
else
AUTHKEYFILE_PATTERN=$(echo "$ret" | sed 's/AuthorizedKeysFile//i' | sed 's#%h/##' | tr -s "[:space:]")
debug "Found pattern in sshdconfig : ${AUTHKEYFILE_PATTERN}."
fi
fi
if [ -z "$AUTHKEYFILE_PATTERN" ] ; then
AUTHKEYFILE_PATTERN=$AUTHKEYFILE_PATTERN_DEFAULT
debug "Set default pattern for authorized_keys file."
fi
for line in $($SUDO_CMD cat /etc/passwd | cut -d ":" -f 1,7); do
# Checking if at least one AuthKeyFile has been found for this user
FOUND_AUTHKF=0
user=$(echo "$line" | cut -d ":" -f 1);
shell=$(echo "$line" | cut -d ':' -f 2);
if grep -q "$shell" <<< "$ALLOWED_NOLOGIN_SHELLS" ; then
continue
else
info "User $user has a valid shell.";
if [ "x$user" = "xroot" ]; then
check_dir /root
continue
elif $SUDO_CMD [ ! -d /home/"$user" ]; then
info "User $user has no home directory."
continue
fi
check_dir /home/"${user}"
if [ $FOUND_AUTHKF = 0 ]; then
warn "$user has a valid shell but no authorized_keys file"
fi
fi
done
}
# This function will be called if the script status is on enabled mode
apply () {
:
}
create_config() {
cat <<EOF
status=disabled
# Put authorized IPs you want to allow in "from" field of authorized_keys
ALLOWED_IPS=""
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

96
bin/hardening/99.5.5_ssh_strict_modes.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# OVH Security audit
#
#
# Ensure home directory and ssh sensitive files are verified (not publicly readable) before connecting.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
DESCRIPTION="Ensure home directory and ssh sensitive files are verified (not publicly readable) before connecting."
PACKAGE='openssh-server'
OPTIONS='StrictModes=yes'
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

88
bin/hardening/99.5.6_ssh_sys_accept_env.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# 9Restrict which user's variables are accepted by ssh daemon
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Restrict which user's variables are accepted by ssh daemon"
PACKAGE='openssh-server'
PATTERN='^\s*AcceptEnv\s+LANG LC_\*'
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$PATTERN"
PATTERN=$( sed 's/\^//' <<< "$PATTERN" | sed -r 's/\\s\*//' | sed -r 's/\\s\+/ /g' | sed 's/\\//g')
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$PATTERN"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$PATTERN"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

66
bin/hardening/99.5.7_ssh_sys_no_legacy.sh Executable file
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#!/bin/bash
# run-shellcheck
# CIS Debian 7 Hardening
#
#
# Ensure that legacy services rlogin, rlogind and rcp are disabled and not installed
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
DESCRIPTION="Ensure that legacy services rlogin, rlogind and rcp are disabled and not installed"
# shellcheck disable=2034
SERVICES="rlogin rlogind rcp"
# This function will be called if the script status is on enabled / audit mode
audit () {
for SERVICE in $SERVICES
do
info "Checking if $SERVICE is enabled and installed"
is_service_enabled "$SERVICE"
if [ "$FNRET" != 0 ]; then
ok "$SERVICE is disabled"
else
crit "$SERVICE is enabled"
fi
is_pkg_installed "$SERVICE"
if [ "$FNRET" != 0 ]; then
ok "$SERVICE is not installed"
else
warn "$SERVICE is installed"
fi
done
}
# This function will be called if the script status is on enabled mode
apply () {
:
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$CIS_ROOT_DIR" ]; then
echo "There is no /etc/default/cis-hardening file nor cis-hardening directory in current environment, 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

98
bin/hardening/99.5.8_ssh_sys_sandbox.sh Executable file
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#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# Check UsePrivilegeSeparation set to sandbox.
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
HARDENING_LEVEL=2
# shellcheck disable=2034
DESCRIPTION="Check UsePrivilegeSeparation set to sandbox."
PACKAGE='openssh-server'
OPTIONS='UsePrivilegeSeparation=sandbox'
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

97
bin/hardening/99.5.9_ssh_loglevel.sh Executable file
View File

@ -0,0 +1,97 @@
#!/bin/bash
# run-shellcheck
#
# CIS Debian 7/8 Hardening
#
#
# SSH log level is set to VERBOSE
#
set -e # One error, it's over
set -u # One variable unset, it's over
# shellcheck disable=2034
DESCRIPTION="SSH log level is set to VERBOSE"
# shellcheck disable=2034
HARDENING_LEVEL=2
PACKAGE='openssh-server'
OPTIONS='LogLevel=VERBOSE'
FILE='/etc/ssh/sshd_config'
# This function will be called if the script status is on enabled / audit mode
audit () {
is_pkg_installed $PACKAGE
if [ "$FNRET" != 0 ]; then
crit "$PACKAGE is not installed!"
else
ok "$PACKAGE is installed"
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
crit "$PATTERN is not present in $FILE"
fi
done
fi
}
# This function will be called if the script status is on enabled mode
apply () {
is_pkg_installed $PACKAGE
if [ "$FNRET" = 0 ]; then
ok "$PACKAGE is installed"
else
crit "$PACKAGE is absent, installing it"
apt_install $PACKAGE
fi
for SSH_OPTION in $OPTIONS; do
SSH_PARAM=$(echo $SSH_OPTION | cut -d= -f 1)
SSH_VALUE=$(echo $SSH_OPTION | cut -d= -f 2)
PATTERN="^$SSH_PARAM[[:space:]]*$SSH_VALUE"
does_pattern_exist_in_file_nocase $FILE "$PATTERN"
if [ "$FNRET" = 0 ]; then
ok "$PATTERN is present in $FILE"
else
warn "$PATTERN is not present in $FILE, adding it"
does_pattern_exist_in_file_nocase $FILE "^$SSH_PARAM"
if [ "$FNRET" != 0 ]; then
add_end_of_file $FILE "$SSH_PARAM $SSH_VALUE"
else
info "Parameter $SSH_PARAM is present but with the wrong value -- Fixing"
replace_in_file $FILE "^$SSH_PARAM[[:space:]]*.*" "$SSH_PARAM $SSH_VALUE"
fi
/etc/init.d/ssh reload > /dev/null 2>&1
fi
done
}
# This function will check config parameters required
check_config() {
:
}
# Source Root Dir Parameter
if [ -r /etc/default/cis-hardening ]; then
. /etc/default/cis-hardening
fi
if [ -z "$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

34
lib/utils.sh
View File

@ -95,14 +95,25 @@ has_file_correct_permissions() {
fi fi
} }
does_pattern_exist_in_file_nocase() {
_does_pattern_exist_in_file "-Ei" $*
}
does_pattern_exist_in_file() { does_pattern_exist_in_file() {
local FILE=$1 _does_pattern_exist_in_file "-E" $*
local PATTERN=$2 }
_does_pattern_exist_in_file() {
local OPTIONS="$1"
shift
local FILE="$1"
shift
local PATTERN="$*"
debug "Checking if $PATTERN is present in $FILE" debug "Checking if $PATTERN is present in $FILE"
if $SUDO_CMD [ -r "$FILE" ] ; then if $SUDO_CMD [ -r "$FILE" ] ; then
debug "$SUDO_CMD grep -qE -- '$PATTERN' $FILE" debug "$SUDO_CMD grep -q $OPTIONS -- '$PATTERN' $FILE"
if $($SUDO_CMD grep -qE -- "$PATTERN" $FILE); then if $($SUDO_CMD grep -q $OPTIONS -- "$PATTERN" $FILE); then
FNRET=0 FNRET=0
else else
FNRET=1 FNRET=1
@ -382,3 +393,18 @@ is_pkg_installed()
FNRET=1 FNRET=1
fi fi
} }
# Returns Debian major version
get_debian_major_version()
{
DEB_MAJ_VER=""
does_file_exist /etc/debian_version
if [ $FNRET ]; then
DEB_MAJ_VER=$(cut -d '.' -f1 /etc/debian_version)
else
DEB_MAJ_VER=$(lsb_release -r | cut -f2 | cut -d '.' -f 1)
fi
}

2
shellcheck/launch_shellcheck.sh
View File

@ -14,7 +14,7 @@ fi
for f in $files; do for f in $files; do
if head "$f" | grep -qE "^# run-shellcheck$"; then if head "$f" | grep -qE "^# run-shellcheck$"; then
printf "\e[1;36mRunning shellcheck on: %s \e[0m\n" "$f" printf "\e[1;36mRunning shellcheck on: %s \e[0m\n" "$f"
if ! /usr/bin/shellcheck --color=always --shell=bash "$f"; then if ! /usr/bin/shellcheck --color=always --shell=bash -e SC1091 "$f"; then
retval=$((retval + 1)) retval=$((retval + 1))
fi fi
fi fi

25
tests/hardening/99.3.1_acc_shadow_sha512.sh Normal file
View File

@ -0,0 +1,25 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "There is no password in /etc/shadow"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
cp -a /etc/shadow /tmp/shadow.bak
sed -i 's/secaudit:!/secaudit:mypassword/' /etc/shadow
describe Fail: Found unsecure password
register_test retvalshouldbe 1
register_test contain "User secaudit has a password that is not SHA512 hashed"
run unsecpasswd /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
mv /tmp/shadow.bak /etc/shadow
chpasswd << EOF
secaudit:mypassword
EOF
describe Pass: Found properly hashed password
register_test retvalshouldbe 0
register_test contain "User secaudit has suitable SHA512 hashed password"
run sha512pass /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

28
tests/hardening/99.3.2_acc_sudoers_no_all.sh Normal file
View File

@ -0,0 +1,28 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "There is no carte-blanche sudo permission in"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# Proceed to operation that will end up to a non compliant system
useradd -s /bin/bash jeantestuser
echo 'jeantestuser ALL = (ALL) NOPASSWD:ALL' >> /etc/sudoers.d/jeantestuser
describe Fail: Not compliant system
register_test retvalshouldbe 1
register_test contain "[ KO ] jeantestuser ALL = (ALL) NOPASSWD:ALL is present in /etc/sudoers.d/jeantestuser"
run userallcmd /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# shellcheck disable=2016
echo 'EXCEPT="$EXCEPT jeantestuser"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
describe Adding jeantestuser to exceptions
register_test retvalshouldbe 0
register_test contain "[ OK ] jeantestuser ALL = (ALL) NOPASSWD:ALL is present in /etc/sudoers.d/jeantestuser but was EXCUSED because jeantestuser is part of exceptions"
run userexcept /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
rm -f /etc/sudoers.d/jeantestuser
userdel jeantestuser
}

9
tests/hardening/99.3.3_acc_pam_sha512.sh Normal file
View File

@ -0,0 +1,9 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "[ OK ] ^\s*password\s.+\s+pam_unix\.so\s+.*sha512 is present in /etc/pam.d/common-password"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

38
tests/hardening/99.3.4_acc_logindefs_sha512.sh Normal file
View File

@ -0,0 +1,38 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "ENCRYPT_METHOD SHA512 is present in /etc/login.defs"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
cp /etc/login.defs /tmp/login.defs.bak
describe Line as comment
sed -i 's/\(ENCRYPT_METHOD SHA512\)/# \1/' /etc/login.defs
register_test retvalshouldbe 1
register_test contain "SHA512 is not present"
run commented /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
rm /etc/login.defs
describe Fail: missing conf file
register_test retvalshouldbe 1
register_test contain "/etc/login.defs is not readable"
run missconffile /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
cp /tmp/login.defs.bak /etc/login.defs
sed -ir 's/ENCRYPT_METHOD[[:space:]]\+SHA512/ENCRYPT_METHOD MD5/' /etc/login.defs
describe Fail: wrong hash function configuration
register_test retvalshouldbe 1
register_test contain "SHA512 is not present"
run wrongconf /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
mv /tmp/login.defs.bak /etc/login.defs
register_test retvalshouldbe 0
run sha512pass /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

29
tests/hardening/99.5.1_ssh_auth_pubk_only.sh Normal file
View File

@ -0,0 +1,29 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^PubkeyAuthentication[[:space:]]+yes is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^PasswordAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^KbdInteractiveAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^KerberosAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^ChallengeResponseAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^HostbasedAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^GSSAPIAuthentication[[:space:]]+no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^GSSAPIKeyExchange[[:space:]]+no is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

29
tests/hardening/99.5.2.1_ssh_cry_kex.sh Normal file
View File

@ -0,0 +1,29 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
cp -a /etc/ssh/sshd_config /tmp/sshd_config.bak
describe Change case of config line
sed -i 's/\(KexAlgorithms\)/\U\1/' /etc/ssh/sshd_config
register_test retvalshouldbe 0
run uppercase /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
mv /tmp/sshd_config.bak /etc/ssh/sshd_config
describe Checking resolved state
register_test retvalshouldbe 0
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

22
tests/hardening/99.5.2.2_ssh_cry_mac.sh Normal file
View File

@ -0,0 +1,22 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^MACs[[:space:]]*umac-128-etm@openssh.com,umac-64-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha2-256-etm@openssh.com,umac-128@openssh.com,umac-64@openssh.com,hmac-sha2-512,hmac-sha2-256 is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

22
tests/hardening/99.5.2.3_ssh_cry_rekey.sh Normal file
View File

@ -0,0 +1,22 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^RekeyLimit[[:space:]]*512M\s+6h is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

28
tests/hardening/99.5.3_ssh_disable_features.sh Normal file
View File

@ -0,0 +1,28 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^AllowAgentForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^AllowTcpForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^AllowStreamLocalForwarding[[:space:]]*no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^PermitTunnel[[:space:]]*no is present in /etc/ssh/sshd_config
"
register_test contain "[ OK ] ^PermitUserRC[[:space:]]*no is present in /etc/ssh/sshd_config"
register_test contain "[ OK ] ^GatewayPorts[[:space:]]*no is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

50
tests/hardening/99.5.4_ssh_keys_from.sh Normal file
View File

@ -0,0 +1,50 @@
# run-shellcheck
test_audit() {
dismiss_test
# shellcheck disable=2154
run genconf /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
useradd -s /bin/bash jeantestuser
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "[WARN] secaudit has a valid shell but no authorized_keys file"
register_test contain "[INFO] User jeantestuser has a valid shell"
register_test contain "[INFO] User jeantestuser has no home directory"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
mkdir -p /home/secaudit/.ssh
touch /home/secaudit/.ssh/authorized_keys2
describe empty authorized keys file
register_test retvalshouldbe 0
run emptyauthkey /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
ssh-keygen -t ed25519 -f /tmp/key1
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
describe Key without from field
register_test retvalshouldbe 1
run keynofrom /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
echo -n 'from="127.0.0.1" ' > /home/secaudit/.ssh/authorized_keys2
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
describe Key with from, no ip check
register_test retvalshouldbe 0
run keyfrom /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# shellcheck disable=2016
echo 'ALLOWED_IPS="$ALLOWED_IPS 127.0.0.1"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
echo -n 'from="10.0.1.2" ' >> /home/secaudit/.ssh/authorized_keys2
cat /tmp/key1.pub >> /home/secaudit/.ssh/authorized_keys2
describe Key with from, filled allowed IPs, one bad ip
register_test retvalshouldbe 1
run badfromip /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# shellcheck disable=2016
echo 'ALLOWED_IPS="$ALLOWED_IPS 10.0.1.2"' >> /opt/debian-cis/etc/conf.d/"${script}".cfg
describe Key with from, filled allowed IPs, all IPs allowed
register_test retvalshouldbe 0
run allwdfromip /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
userdel jeantestuser
}

23
tests/hardening/99.5.5_ssh_strict_modes.sh Normal file
View File

@ -0,0 +1,23 @@
# run-shellcheck
test_audit() {
describe Running on blank host
dismiss_count_for_test
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^StrictModes[[:space:]]*yes is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

30
tests/hardening/99.5.6_ssh_sys_accept_env.sh Normal file
View File

@ -0,0 +1,30 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
# Proceed to operation that will end up to a non compliant system
describe Tests purposely failing
sed -ri 's/^\s*AcceptEnv\s+LANG LC_\*//' /etc/ssh/sshd_config
register_test retvalshouldbe 1
register_test contain "[ KO ] ^\s*AcceptEnv\s+LANG LC_\* is not present in /etc/ssh/sshd_config"
run noncompliant /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^\s*AcceptEnv\s+LANG LC_\* is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

8
tests/hardening/99.5.7_ssh_sys_no_legacy.sh Normal file
View File

@ -0,0 +1,8 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 0
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

22
tests/hardening/99.5.8_ssh_sys_sandbox.sh Normal file
View File

@ -0,0 +1,22 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^UsePrivilegeSeparation[[:space:]]*sandbox is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

22
tests/hardening/99.5.9_ssh_loglevel.sh Normal file
View File

@ -0,0 +1,22 @@
# run-shellcheck
test_audit() {
describe Running on blank host
register_test retvalshouldbe 1
register_test contain "openssh-server is installed"
# shellcheck disable=2154
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
describe Correcting situation
# `apply` performs a service reload after each change in the config file
# the service needs to be started for the reload to succeed
service ssh start
# if the audit script provides "apply" option, enable and run it
sed -i 's/disabled/enabled/' /opt/debian-cis/etc/conf.d/"${script}".cfg
/opt/debian-cis/bin/hardening/"${script}".sh || true
describe Checking resolved state
register_test retvalshouldbe 0
register_test contain "[ OK ] ^LogLevel[[:space:]]*VERBOSE is present in /etc/ssh/sshd_config"
run resolved /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
}

2
tests/launch_tests.sh
View File

@ -4,8 +4,6 @@
set -e set -e
# stop on undefined variable # stop on undefined variable
set -u set -u
# debug
#set -x
mytmpdir=$(mktemp -d -t debian-cis-test.XXXXXX) mytmpdir=$(mktemp -d -t debian-cis-test.XXXXXX)
totalerrors=255 totalerrors=255