Re: Deny Access To configuration file using php scripts
From: Mohammed Salih (webadmin_at_grc.ae)
Date: 03/05/05
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Date: Sat, 05 Mar 2005 09:27:31 +0400 To: focus-linux@securityfocus.com
Does it show up if some one uses - phpinfo() or some thing which can
print the environment variables.
administrator@bluephyre.ca wrote:
>I'm late joining this thread, so I apologize if someone has already
>suggested this, but try putting this in the VirtualHost configuration
>file:
>
>SetEnv DB_USER "myuser"
>SetEnv DB_PASS "mypass"
>
>Now you can use $_SERVER['DB_USER'] and $_SERVER['DB_PASS'] in
>your code. This way the values are available to your virtual host only,
>and presumably your httpd.conf file in only readable by root.
>
>CSH
>
>
>
>>
>>
>>>-----Original Message-----
>>>From: Suramya Tomar [mailto:security@suramya.com]
>>>Sent: Wednesday, 2 March 2005 9:59 AM
>>>To: raT
>>>Cc: focus-linux@securityfocus.com
>>>Subject: Re: Deny Access To configuration file using php scripts
>>>
>>>Hi,
>>>
>>>
>>>
>>>>Hello i have a web server and i have a major problem
>>>>some of my users are trying to find my pass for my mysql database.
>>>>
>>>>
>>>My first suggestion would be to warn these users that this is not
>>>allowed and ban them from the system if they persist.
>>>
>>>
>>>
>>>>the first thing they do is a
>>>>system ('cat /var/www/path to config file');
>>>>inside a php script
>>>>
>>>>
>>>There are a couple of things you can try, First you can use apache
>>>directives to deny access to the file. To do that add the
>>>following text
>>>to the httpd.conf file:
>>>
>>><Files ~ "\.inc$">
>>> Order allow, deny
>>> Deny from all
>>></Files>
>>>
>>>
>>While that may stop the web-server from server the files up, it would
>>not stop a php script from accessing the files.
>>
>>I'm not sure that this can easily be solved. If the file needs to be
>>readable by apache, then it can also be read by any other process
>>running as the same user as apache, which would be every php script.
>>
>>If you are using virtual hosts, then you may be able to solve the
>>problem using apaches per-user virtual-host configuration. This allows
>>scripts to run as someone other than 'nobody' (or whoever apache is
>>running as).
>>
>>
>>
>>>This would prevent all files with the .inc extension from
>>>being viewed
>>>via the web.
>>>
>>>The second thing I would suggest is to disable access to the system()
>>>
>>>
>>They could also use functions like fopen(), require(), include(), etc to
>>read the files.
>>
>>
>>
>>>function unless you really really need it. You can do that in the
>>>php.ini file by using the disable_functions directive. It
>>>allows you to
>>>define a comma-delimited list of functions to be disabled within PHP.
>>>(http://www.onlamp.com/pub/a/php/2001/02/15/php_admin.html)
>>>
>>>Hope this helps.
>>>
>>>- Suramya
>>>
>>>--
>>>----------------------------------------------------------
>>>Some days you're the dog; some days you're the hydrant.
>>>----------------------------------------------------------
>>>Name : Suramya Tomar
>>>Homepage URL: http://www.suramya.com
>>>-------------------------------------------------
>>>
>>>************************************************************
>>>Disclaimer:
>>>Any errors in spelling, tact, or fact are transmission errors.
>>>************************************************************
>>>
>>>
>>>
>
>
>
>
>
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