Enabled Suphp But Still Can Read /etc/passwd

It there any good way to stop using from reading /etc/passwd?

I have suPHP enabled and open_basedir enabled by WHM too. But it seems susphp ignores open_basedir restrictions?

Here is virtual host config:

<VirtualHost x.x.x.x:80>
<IfModule concurrent_php.c>
php4_admin_value open_basedir "/home/xxx/:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/lib/p$
php5_admin_value open_basedir "/home/xxx/:/usr/lib/php:/usr/local/lib/php:/tmp"
</IfModule>
<IfModule !concurrent_php.c>
<IfModule mod_php4.c>
php_admin_value open_basedir "/home/xxx/:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/li$
</IfModule>
<IfModule mod_php5.c>
php_admin_value open_basedir "/home/xxx/:/usr/lib/php:/usr/local/lib/php:/tmp"
</IfModule>
<IfModule sapi_apache2.c>
php_admin_value open_basedir "/home/xxx/:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/li$
</IfModule>
</IfModule>
ServerName xxx.com
ServerAlias www.xxx.com
DocumentRoot /home/xxx/public_html
ServerAdmin webmaster@xxx.com
UseCanonicalName Off
CustomLog /usr/local/apache/domlogs/xxx.com combined
CustomLog /usr/local/apache/domlogs/xxx.com-bytes_log "%{%s}t %I .
%{%s}t %O ."
## User xxx # Needed for Cpanel::ApacheConf
<IfModule mod_suphp.c>
suPHP_UserGroup xxx xxx
</IfModule>
<IfModule !mod_disable_suexec.c>
SuexecUserGroup xxx xxx
</IfModule>
ScriptAlias /cgi-bin/ /home/xxx/public_html/cgi-bin/
DocumentRoot /home/xxx/public_html
ServerAdmin webmaster@xxx.com
UseCanonicalName Off
CustomLog /usr/local/apache/domlogs/xxx.com combined
CustomLog /usr/local/apache/domlogs/xxx.com-bytes_log "%{%s}t %I .
%{%s}t %O ."
## User xxx # Needed for Cpanel::ApacheConf
<IfModule mod_suphp.c>
suPHP_UserGroup xxx xxx
</IfModule>
<IfModule !mod_disable_suexec.c>
SuexecUserGroup xxx xxx
</IfModule>
ScriptAlias /cgi-bin/ /home/xxx/public_html/cgi-bin/
# To customize this VirtualHost use an include file at the following location
# Include "/usr/local/apache/conf/userdata/std/2/xxx/xxx.com/*.conf"

</VirtualHost>

Scripts are running with user's UID, and that is fine, but it can still read /etc/passwd file for example.

How to fix that? Is it really open_basedir value is ignored by susphp? It works fine if I remove suphp and run scripts with nobody uid.