mirror of
https://github.com/ovh/debian-cis.git
synced 2025-07-16 22:02:17 +02:00
Compare commits
8 Commits
Author | SHA1 | Date | |
---|---|---|---|
88e3a515ef | |||
55c1cdbdde | |||
6f5d714b55 | |||
a37c5bdc4e | |||
d6e5803252 | |||
922f28c200 | |||
70be679567 | |||
413277d7eb |
@ -14,13 +14,18 @@ set -u # One variable unset, it's over
|
|||||||
# shellcheck disable=2034
|
# shellcheck disable=2034
|
||||||
HARDENING_LEVEL=2
|
HARDENING_LEVEL=2
|
||||||
DESCRIPTION="Find SUID system executables."
|
DESCRIPTION="Find SUID system executables."
|
||||||
|
IGNORED_PATH=''
|
||||||
|
|
||||||
# This function will be called if the script status is on enabled / audit mode
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
audit () {
|
audit () {
|
||||||
info "Checking if there are suid files"
|
info "Checking if there are suid files"
|
||||||
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }' )
|
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }' )
|
||||||
# shellcheck disable=2086
|
# shellcheck disable=2086
|
||||||
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -print)
|
if [ ! -z $IGNORED_PATH ]; then
|
||||||
|
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -regextype 'egrep' ! -regex "$IGNORED_PATH" -print)
|
||||||
|
else
|
||||||
|
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -4000 -print)
|
||||||
|
fi
|
||||||
BAD_BINARIES=""
|
BAD_BINARIES=""
|
||||||
for BINARY in $FOUND_BINARIES; do
|
for BINARY in $FOUND_BINARIES; do
|
||||||
if grep -qw "$BINARY" <<< "$EXCEPTIONS"; then
|
if grep -qw "$BINARY" <<< "$EXCEPTIONS"; then
|
||||||
|
@ -14,13 +14,18 @@ set -u # One variable unset, it's over
|
|||||||
# shellcheck disable=2034
|
# shellcheck disable=2034
|
||||||
HARDENING_LEVEL=2
|
HARDENING_LEVEL=2
|
||||||
DESCRIPTION="Find SGID system executables."
|
DESCRIPTION="Find SGID system executables."
|
||||||
|
IGNORED_PATH=''
|
||||||
|
|
||||||
# This function will be called if the script status is on enabled / audit mode
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
audit () {
|
audit () {
|
||||||
info "Checking if there are sgid files"
|
info "Checking if there are sgid files"
|
||||||
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }' )
|
FS_NAMES=$(df --local -P | awk '{ if (NR!=1) print $6 }' )
|
||||||
# shellcheck disable=2086
|
# shellcheck disable=2086
|
||||||
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -print)
|
if [ ! -z $IGNORED_PATH ]; then
|
||||||
|
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -regextype 'egrep' ! -regex "$IGNORED_PATH" -print)
|
||||||
|
else
|
||||||
|
FOUND_BINARIES=$( $SUDO_CMD find $FS_NAMES -xdev -type f -perm -2000 -print)
|
||||||
|
fi
|
||||||
BAD_BINARIES=""
|
BAD_BINARIES=""
|
||||||
for BINARY in $FOUND_BINARIES; do
|
for BINARY in $FOUND_BINARIES; do
|
||||||
if grep -qw "$BINARY" <<< "$EXCEPTIONS"; then
|
if grep -qw "$BINARY" <<< "$EXCEPTIONS"; then
|
||||||
|
@ -15,12 +15,17 @@ HARDENING_LEVEL=2
|
|||||||
DESCRIPTION="Find un-owned files and directories."
|
DESCRIPTION="Find un-owned files and directories."
|
||||||
|
|
||||||
USER='root'
|
USER='root'
|
||||||
|
EXCLUDED=''
|
||||||
|
|
||||||
# This function will be called if the script status is on enabled / audit mode
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
audit () {
|
audit () {
|
||||||
info "Checking if there are unowned files"
|
info "Checking if there are unowned files"
|
||||||
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'} )
|
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'} )
|
||||||
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nouser -print 2>/dev/null)
|
if [ ! -z $EXCLUDED ]; then
|
||||||
|
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nouser -regextype 'egrep' ! -regex "$EXCLUDED" -print 2>/dev/null)
|
||||||
|
else
|
||||||
|
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nouser -print 2>/dev/null)
|
||||||
|
fi
|
||||||
if [ ! -z "$RESULT" ]; then
|
if [ ! -z "$RESULT" ]; then
|
||||||
crit "Some unowned files are present"
|
crit "Some unowned files are present"
|
||||||
FORMATTED_RESULT=$(sed "s/ /\n/g" <<< $RESULT | sort | uniq | tr '\n' ' ')
|
FORMATTED_RESULT=$(sed "s/ /\n/g" <<< $RESULT | sort | uniq | tr '\n' ' ')
|
||||||
@ -32,7 +37,11 @@ audit () {
|
|||||||
|
|
||||||
# This function will be called if the script status is on enabled mode
|
# This function will be called if the script status is on enabled mode
|
||||||
apply () {
|
apply () {
|
||||||
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -ls 2>/dev/null)
|
if [ ! -z $EXCLUDED ]; then
|
||||||
|
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -regextype 'egrep' ! -regex "$EXCLUDED" -ls 2>/dev/null)
|
||||||
|
else
|
||||||
|
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -ls 2>/dev/null)
|
||||||
|
fi
|
||||||
if [ ! -z "$RESULT" ]; then
|
if [ ! -z "$RESULT" ]; then
|
||||||
warn "Applying chown on all unowned files in the system"
|
warn "Applying chown on all unowned files in the system"
|
||||||
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -print 2>/dev/null | xargs chown $USER
|
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nouser -print 2>/dev/null | xargs chown $USER
|
||||||
|
@ -15,12 +15,17 @@ HARDENING_LEVEL=2
|
|||||||
DESCRIPTION="Find un-grouped files and directories."
|
DESCRIPTION="Find un-grouped files and directories."
|
||||||
|
|
||||||
GROUP='root'
|
GROUP='root'
|
||||||
|
EXCLUDED=''
|
||||||
|
|
||||||
# This function will be called if the script status is on enabled / audit mode
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
audit () {
|
audit () {
|
||||||
info "Checking if there are ungrouped files"
|
info "Checking if there are ungrouped files"
|
||||||
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'} )
|
FS_NAMES=$(df --local -P | awk {'if (NR!=1) print $6'} )
|
||||||
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nogroup -print 2>/dev/null)
|
if [ ! -z $EXCLUDED ]; then
|
||||||
|
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nogroup -regextype 'egrep' ! -regex "$EXCLUDED" -print 2>/dev/null)
|
||||||
|
else
|
||||||
|
RESULT=$( $SUDO_CMD find $FS_NAMES -xdev -nogroup -print 2>/dev/null)
|
||||||
|
fi
|
||||||
if [ ! -z "$RESULT" ]; then
|
if [ ! -z "$RESULT" ]; then
|
||||||
crit "Some ungrouped files are present"
|
crit "Some ungrouped files are present"
|
||||||
FORMATTED_RESULT=$(sed "s/ /\n/g" <<< $RESULT | sort | uniq | tr '\n' ' ')
|
FORMATTED_RESULT=$(sed "s/ /\n/g" <<< $RESULT | sort | uniq | tr '\n' ' ')
|
||||||
@ -32,7 +37,11 @@ audit () {
|
|||||||
|
|
||||||
# This function will be called if the script status is on enabled mode
|
# This function will be called if the script status is on enabled mode
|
||||||
apply () {
|
apply () {
|
||||||
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -ls 2>/dev/null)
|
if [ ! -z $EXCLUDED ]; then
|
||||||
|
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -regextype 'egrep' ! -regex "$EXCLUDED" -ls 2>/dev/null)
|
||||||
|
else
|
||||||
|
RESULT=$(df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -ls 2>/dev/null)
|
||||||
|
fi
|
||||||
if [ ! -z "$RESULT" ]; then
|
if [ ! -z "$RESULT" ]; then
|
||||||
warn "Applying chgrp on all ungrouped files in the system"
|
warn "Applying chgrp on all ungrouped files in the system"
|
||||||
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -print 2>/dev/null | xargs chgrp $GROUP
|
df --local -P | awk {'if (NR!=1) print $6'} | xargs -I '{}' find '{}' -xdev -nogroup -print 2>/dev/null | xargs chgrp $GROUP
|
||||||
|
61
bin/hardening/4.2.3_install_syslog-ng.sh
Executable file
61
bin/hardening/4.2.3_install_syslog-ng.sh
Executable file
@ -0,0 +1,61 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
#
|
||||||
|
# CIS Debian Hardening
|
||||||
|
#
|
||||||
|
|
||||||
|
#
|
||||||
|
# 4.2.3 Ensure Syslog-ng is installed (Scored)
|
||||||
|
#
|
||||||
|
|
||||||
|
set -e # One error, it's over
|
||||||
|
set -u # One variable unset, it's over
|
||||||
|
|
||||||
|
HARDENING_LEVEL=3
|
||||||
|
DESCRIPTION="Install syslog-ng to manage logs"
|
||||||
|
|
||||||
|
PACKAGE='syslog-ng'
|
||||||
|
|
||||||
|
# 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"
|
||||||
|
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 $PACKAGE
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will check config parameters required
|
||||||
|
check_config() {
|
||||||
|
:
|
||||||
|
}
|
||||||
|
|
||||||
|
# Source Root Dir Parameter
|
||||||
|
if [ -r /etc/default/cis-hardening ]; then
|
||||||
|
. /etc/default/cis-hardening
|
||||||
|
fi
|
||||||
|
if [ -z "$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
|
||||||
|
. $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
|
64
bin/hardening/4.2.4_logs_permissions.sh
Executable file
64
bin/hardening/4.2.4_logs_permissions.sh
Executable file
@ -0,0 +1,64 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
#
|
||||||
|
# CIS Debian Hardening
|
||||||
|
#
|
||||||
|
|
||||||
|
#
|
||||||
|
# 4.2.4 Ensure permissions on all logfiles are configured (Scored)
|
||||||
|
#
|
||||||
|
|
||||||
|
set -e # One error, it's over
|
||||||
|
set -u # One variable unset, it's over
|
||||||
|
|
||||||
|
HARDENING_LEVEL=2
|
||||||
|
DESCRIPTION="Check permissions on logs (other has no permissions on any files and group does not have write or execute permissions on any file)"
|
||||||
|
|
||||||
|
DIR='/var/log'
|
||||||
|
PERMISSIONS='640'
|
||||||
|
OPTIONS=(-type f)
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
|
audit () {
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "Logs in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
crit "Some logs in $DIR permissions were not set to $PERMISSIONS"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled mode
|
||||||
|
apply () {
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "Logs in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
info "fixing $DIR logs permissions to $PERMISSIONS"
|
||||||
|
find $DIR -type f -exec chmod 0$PERMISSIONS {} \;
|
||||||
|
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
|
||||||
|
. $CIS_ROOT_DIR/lib/main.sh
|
||||||
|
else
|
||||||
|
echo "Cannot find main.sh, have you correctly defined your root directory? Current value is $CIS_ROOT_DIR in /etc/default/cis-hardening"
|
||||||
|
exit 128
|
||||||
|
fi
|
106
bin/hardening/5.2.17_sshd_login_grace_time.sh
Executable file
106
bin/hardening/5.2.17_sshd_login_grace_time.sh
Executable file
@ -0,0 +1,106 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
#
|
||||||
|
# CIS Debian Hardening
|
||||||
|
#
|
||||||
|
|
||||||
|
#
|
||||||
|
# 5.2.17 Ensure SSH LoginGraceTime is set to one minute or less (Scored)
|
||||||
|
#
|
||||||
|
|
||||||
|
set -e # One error, it's over
|
||||||
|
set -u # One variable unset, it's over
|
||||||
|
|
||||||
|
HARDENING_LEVEL=3
|
||||||
|
DESCRIPTION="Set Login Grace Time for user login."
|
||||||
|
|
||||||
|
PACKAGE='openssh-server'
|
||||||
|
FILE='/etc/ssh/sshd_config'
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
|
audit () {
|
||||||
|
OPTIONS="LoginGraceTime=$SSHD_LOGIN_GRACE_TIME"
|
||||||
|
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 $FILE "$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 $FILE "$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 $FILE "^$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
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will create the config file for this check with default values
|
||||||
|
create_config() {
|
||||||
|
cat <<EOF
|
||||||
|
status=audit
|
||||||
|
# In seconds, value of LoginGraceTime
|
||||||
|
# Settles sshd login grace time
|
||||||
|
SSHD_LOGIN_GRACE_TIME=60
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will check config parameters required
|
||||||
|
check_config() {
|
||||||
|
if [ -z $SSHD_LOGIN_GRACE_TIME ]; then
|
||||||
|
crit "SSHD_LOGIN_GRACE_TIME is not set, please edit configuration file"
|
||||||
|
exit 128
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# Source Root Dir Parameter
|
||||||
|
if [ -r /etc/default/cis-hardening ]; then
|
||||||
|
. /etc/default/cis-hardening
|
||||||
|
fi
|
||||||
|
if [ -z "$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
|
88
bin/hardening/5.2.2_ssh_host_private_keys_perm_ownership.sh
Executable file
88
bin/hardening/5.2.2_ssh_host_private_keys_perm_ownership.sh
Executable file
@ -0,0 +1,88 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
#
|
||||||
|
# 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'
|
||||||
|
OPTIONS=(-xdev -type f -name "ssh_host_*_key")
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
|
audit () {
|
||||||
|
have_files_in_dir_correct_ownership $DIR $USER $GROUP OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct ownership"
|
||||||
|
else
|
||||||
|
crit "Some $DIR SSH public keys ownership were not set to $USER:$GROUP"
|
||||||
|
fi
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
crit "Some $DIR SSH public keys permissions were not set to $PERMISSIONS"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled mode
|
||||||
|
apply () {
|
||||||
|
|
||||||
|
have_files_in_dir_correct_ownership $DIR $USER $GROUP OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct ownership"
|
||||||
|
else
|
||||||
|
warn "fixing $DIR SSH public keys ownership to $USER:$GROUP"
|
||||||
|
find /etc/ssh -xdev -type f -name 'ssh_host_*_key.pub' -exec chown root:root {} \;
|
||||||
|
fi
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
info "fixing $DIR SSH public keys permissions to $PERMISSIONS"
|
||||||
|
find /etc/ssh -xdev -type f -name 'ssh_host_*_key.pub' -exec chmod 0600 {} \;
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# 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
|
88
bin/hardening/5.2.3_ssh_host_public_keys_perm_ownership.sh
Executable file
88
bin/hardening/5.2.3_ssh_host_public_keys_perm_ownership.sh
Executable file
@ -0,0 +1,88 @@
|
|||||||
|
#!/bin/bash
|
||||||
|
|
||||||
|
#
|
||||||
|
# CIS Debian Hardening
|
||||||
|
#
|
||||||
|
|
||||||
|
#
|
||||||
|
# 5.2.3 Ensure permissions on SSH public 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 644 for ssh public keys. "
|
||||||
|
|
||||||
|
DIR='/etc/ssh'
|
||||||
|
PERMISSIONS='644'
|
||||||
|
USER='root'
|
||||||
|
GROUP='root'
|
||||||
|
OPTIONS=(-xdev -type f -name "ssh_host_*_key.pub")
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled / audit mode
|
||||||
|
audit () {
|
||||||
|
have_files_in_dir_correct_ownership $DIR $USER $GROUP OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct ownership"
|
||||||
|
else
|
||||||
|
crit "Some $DIR SSH public keys ownership were not set to $USER:$GROUP"
|
||||||
|
fi
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
crit "Some $DIR SSH public keys permissions were not set to $PERMISSIONS"
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# This function will be called if the script status is on enabled mode
|
||||||
|
apply () {
|
||||||
|
|
||||||
|
have_files_in_dir_correct_ownership $DIR $USER $GROUP OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct ownership"
|
||||||
|
else
|
||||||
|
warn "fixing $DIR SSH public keys ownership to $USER:$GROUP"
|
||||||
|
find /etc/ssh -xdev -type f -name 'ssh_host_*_key.pub' -exec chown root:root {} \;
|
||||||
|
fi
|
||||||
|
have_files_in_dir_correct_permissions $DIR $PERMISSIONS OPTIONS
|
||||||
|
if [ $FNRET = 0 ]; then
|
||||||
|
ok "SSH public keys in $DIR have correct permissions"
|
||||||
|
else
|
||||||
|
info "fixing $DIR SSH public keys permissions to $PERMISSIONS"
|
||||||
|
find /etc/ssh -xdev -type f -name 'ssh_host_*_key.pub' -exec chmod 0644 {} \;
|
||||||
|
fi
|
||||||
|
}
|
||||||
|
|
||||||
|
# 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
|
18
debian/changelog
vendored
18
debian/changelog
vendored
@ -1,3 +1,21 @@
|
|||||||
|
cis-hardening (1.3-4) unstable; urgency=medium
|
||||||
|
|
||||||
|
* ADD(1.3.1): Install Ossec
|
||||||
|
* ADD(4.2.3): Syslog-ng install
|
||||||
|
* ADD(4.2.4): Logs permissions
|
||||||
|
* ADD(5.2.2, 5.2.3): SSH host keys permissions and ownership
|
||||||
|
* ADD(5.2.17): SSHD login grace time
|
||||||
|
|
||||||
|
|
||||||
|
-- Thibault AYANIDES <tayanide@ovhcloud.com> Mon, 19 Oct 2020 16:31:48 +0200
|
||||||
|
|
||||||
|
cis-hardening (1.3-3) unstable; urgency=medium
|
||||||
|
|
||||||
|
* changelog: update changelog
|
||||||
|
* IMP(12.8,12.9,12.10,12.11): be able to exclude some paths
|
||||||
|
|
||||||
|
-- Benjamin MONTHOUËL <benjamin.monthouel@ovhcloud.com> Mon, 30 Mar 2020 19:12:03 +0200
|
||||||
|
|
||||||
cis-hardening (1.3-2) unstable; urgency=medium
|
cis-hardening (1.3-2) unstable; urgency=medium
|
||||||
|
|
||||||
* IMP(test/13.12): ignore the phony '/nonexistent' home folder
|
* IMP(test/13.12): ignore the phony '/nonexistent' home folder
|
||||||
|
42
lib/utils.sh
42
lib/utils.sh
@ -84,17 +84,57 @@ has_file_correct_ownership() {
|
|||||||
fi
|
fi
|
||||||
}
|
}
|
||||||
|
|
||||||
|
have_files_in_dir_correct_ownership(){
|
||||||
|
local DIR=$1
|
||||||
|
local USER=$2
|
||||||
|
local GROUP=$3
|
||||||
|
local name=$4[@]
|
||||||
|
local OPTIONS=("${!name}")
|
||||||
|
|
||||||
|
local USERID=$(id -u $USER)
|
||||||
|
local GROUPID=$(getent group $GROUP | cut -d: -f3)
|
||||||
|
|
||||||
|
FNRET=0
|
||||||
|
OIFS="$IFS"
|
||||||
|
IFS=$'\n' # prevents word splitting
|
||||||
|
for owner in $("$SUDO_CMD find $DIR" "${OPTIONS[@]}" "-exec stat -c '%u %g' {} \;");
|
||||||
|
do
|
||||||
|
if [ "$owner" != "$USERID $GROUPID" ]; then
|
||||||
|
FNRET=1
|
||||||
|
break
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
IFS="$OIFS"
|
||||||
|
}
|
||||||
|
|
||||||
has_file_correct_permissions() {
|
has_file_correct_permissions() {
|
||||||
local FILE=$1
|
local FILE=$1
|
||||||
local PERMISSIONS=$2
|
local PERMISSIONS=$2
|
||||||
|
|
||||||
if [ $($SUDO_CMD stat -L -c "%a" $1) = "$PERMISSIONS" ]; then
|
if [ $($SUDO_CMD stat -L -c "%a" $FILE) = "$PERMISSIONS" ]; then
|
||||||
FNRET=0
|
FNRET=0
|
||||||
else
|
else
|
||||||
FNRET=1
|
FNRET=1
|
||||||
fi
|
fi
|
||||||
}
|
}
|
||||||
|
|
||||||
|
have_files_in_dir_correct_permissions(){
|
||||||
|
local DIR=$1
|
||||||
|
local PERMISSIONS=$2
|
||||||
|
local name=$3[@]
|
||||||
|
local OPTIONS=("${!name}")
|
||||||
|
|
||||||
|
FNRET=0
|
||||||
|
for perm in $("$SUDO_CMD find $DIR" "${OPTIONS[@]}" "-exec stat -L -c '%a' {} \;");
|
||||||
|
do
|
||||||
|
echo "$perm ttt $PERMISSIONS"
|
||||||
|
if [ "$perm" != "$PERMISSIONS" ]; then
|
||||||
|
FNRET=1
|
||||||
|
break
|
||||||
|
fi
|
||||||
|
done
|
||||||
|
}
|
||||||
|
|
||||||
does_pattern_exist_in_file_nocase() {
|
does_pattern_exist_in_file_nocase() {
|
||||||
_does_pattern_exist_in_file "-Ei" $*
|
_does_pattern_exist_in_file "-Ei" $*
|
||||||
}
|
}
|
||||||
|
10
tests/hardening/4.2.3_install_syslog-ng.sh
Executable file
10
tests/hardening/4.2.3_install_syslog-ng.sh
Executable file
@ -0,0 +1,10 @@
|
|||||||
|
# run-shellcheck
|
||||||
|
test_audit() {
|
||||||
|
describe Running on blank host
|
||||||
|
register_test retvalshouldbe 0
|
||||||
|
dismiss_count_for_test
|
||||||
|
# shellcheck disable=2154
|
||||||
|
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||||
|
|
||||||
|
# TODO fill comprehensive tests
|
||||||
|
}
|
10
tests/hardening/4.2.4_logs_permissions.sh
Executable file
10
tests/hardening/4.2.4_logs_permissions.sh
Executable file
@ -0,0 +1,10 @@
|
|||||||
|
# run-shellcheck
|
||||||
|
test_audit() {
|
||||||
|
describe Running on blank host
|
||||||
|
register_test retvalshouldbe 0
|
||||||
|
dismiss_count_for_test
|
||||||
|
# shellcheck disable=2154
|
||||||
|
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||||
|
|
||||||
|
# TODO fill comprehensive tests
|
||||||
|
}
|
10
tests/hardening/5.2.17_sshd_login_grace_time.sh
Executable file
10
tests/hardening/5.2.17_sshd_login_grace_time.sh
Executable file
@ -0,0 +1,10 @@
|
|||||||
|
# run-shellcheck
|
||||||
|
test_audit() {
|
||||||
|
describe Running on blank host
|
||||||
|
register_test retvalshouldbe 0
|
||||||
|
dismiss_count_for_test
|
||||||
|
# shellcheck disable=2154
|
||||||
|
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||||
|
|
||||||
|
# TODO fill comprehensive tests
|
||||||
|
}
|
10
tests/hardening/5.2.2_ssh_host_private_keys_perm_ownership.sh
Executable file
10
tests/hardening/5.2.2_ssh_host_private_keys_perm_ownership.sh
Executable file
@ -0,0 +1,10 @@
|
|||||||
|
# run-shellcheck
|
||||||
|
test_audit() {
|
||||||
|
describe Running on blank host
|
||||||
|
register_test retvalshouldbe 0
|
||||||
|
dismiss_count_for_test
|
||||||
|
# shellcheck disable=2154
|
||||||
|
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||||
|
|
||||||
|
# TODO fill comprehensive tests
|
||||||
|
}
|
10
tests/hardening/5.2.3_ssh_host_public_keys_perm_ownership.sh
Executable file
10
tests/hardening/5.2.3_ssh_host_public_keys_perm_ownership.sh
Executable file
@ -0,0 +1,10 @@
|
|||||||
|
# run-shellcheck
|
||||||
|
test_audit() {
|
||||||
|
describe Running on blank host
|
||||||
|
register_test retvalshouldbe 0
|
||||||
|
dismiss_count_for_test
|
||||||
|
# shellcheck disable=2154
|
||||||
|
run blank /opt/debian-cis/bin/hardening/"${script}".sh --audit-all
|
||||||
|
|
||||||
|
# TODO fill comprehensive tests
|
||||||
|
}
|
Reference in New Issue
Block a user