108 lines
3.4 KiB
Bash
Executable File
108 lines
3.4 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
#
|
|
# harbian-audit for Debian GNU/Linux 7/8/9 Hardening
|
|
#
|
|
|
|
#
|
|
# 10.2 Disable System Accounts (Scored)
|
|
#
|
|
|
|
set -e # One error, it's over
|
|
set -u # One variable unset, it's over
|
|
|
|
HARDENING_LEVEL=3
|
|
|
|
SHELL='/bin/false'
|
|
FILE='/etc/passwd'
|
|
RESULT=''
|
|
|
|
# This function will be called if the script status is on enabled / audit mode
|
|
audit () {
|
|
info "Checking if admin accounts have a login shell different than $SHELL"
|
|
RESULT=$(egrep -v "^\+" $FILE | awk -F: '($1!="root" && $1!="sync" && $1!="shutdown" && $1!="halt" && $3<1000 && $7!="/usr/sbin/nologin" && $7!="/bin/false" && $7!="/sbin/nologin") {print}')
|
|
IFS=$'\n'
|
|
for LINE in $RESULT; do
|
|
debug "line : $LINE"
|
|
ACCOUNT=$( echo $LINE | cut -d: -f 1 )
|
|
debug "Account : $ACCOUNT"
|
|
debug "Exceptions : $EXCEPTIONS"
|
|
debug "echo \"$EXCEPTIONS\" | grep -q $ACCOUNT"
|
|
if echo "$EXCEPTIONS" | grep -q $ACCOUNT; then
|
|
debug "$ACCOUNT is confirmed as an exception"
|
|
RESULT=$(sed "s!$LINE!!" <<< "$RESULT")
|
|
else
|
|
debug "$ACCOUNT not found in exceptions"
|
|
fi
|
|
done
|
|
if [ ! -z "$RESULT" ]; then
|
|
crit "Some admin accounts don't have $SHELL as their login shell"
|
|
crit "$RESULT"
|
|
else
|
|
ok "All admin accounts deactivated"
|
|
fi
|
|
}
|
|
|
|
# This function will be called if the script status is on enabled mode
|
|
apply () {
|
|
RESULT=$(egrep -v "^\+" $FILE | awk -F: '($1!="root" && $1!="sync" && $1!="shutdown" && $1!="halt" && $3<1000 && $7!="/usr/sbin/nologin" && $7!="/bin/false") {print}')
|
|
IFS=$'\n'
|
|
for LINE in $RESULT; do
|
|
debug "line : $LINE"
|
|
ACCOUNT=$( echo $LINE | cut -d: -f 1 )
|
|
debug "Account : $ACCOUNT"
|
|
debug "Exceptions : $EXCEPTIONS"
|
|
debug "echo \"$EXCEPTIONS\" | grep -q $ACCOUNT"
|
|
if echo "$EXCEPTIONS" | grep -q $ACCOUNT; then
|
|
debug "$ACCOUNT is confirmed as an exception"
|
|
RESULT=$(sed "s!$LINE!!" <<< "$RESULT")
|
|
else
|
|
debug "$ACCOUNT not found in exceptions"
|
|
fi
|
|
done
|
|
if [ ! -z "$RESULT" ]; then
|
|
warn "Some admin accounts don't have $SHELL as their login shell -- Fixing"
|
|
warn "$RESULT"
|
|
for USER in $( echo "$RESULT" | cut -d: -f 1 ); do
|
|
info "Setting $SHELL as $USER login shell"
|
|
usermod -s $SHELL $USER
|
|
done
|
|
else
|
|
ok "All admin accounts deactivated, nothing to apply"
|
|
fi
|
|
}
|
|
|
|
# This function will create the config file for this check with default values
|
|
create_config() {
|
|
cat <<EOF
|
|
status=disabled
|
|
# Put here your exceptions concerning admin accounts shells separated by spaces
|
|
EXCEPTIONS=""
|
|
EOF
|
|
}
|
|
|
|
# This function will check config parameters required
|
|
check_config() {
|
|
if [ -z "$EXCEPTIONS" ]; then
|
|
EXCEPTIONS="@"
|
|
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
|