full-disclosure - Re: Drupal 7.x Search Module

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Date: Wed, 14 Mar 2012 15:56:53 +0100
From: Christian Sciberras <uuf6429@...il.com>
To: Ferenc Kovacs <tyra3l@...il.com>
Cc: Full Disclosure <full-disclosure@...ts.grok.org.uk>,
	Ursu Mihail <mihai@...uritate.md>
Subject: Re: Drupal 7.x Search Module - Full Path
	Disclosure

It would take an incredible effort for todays powerful frameworks to simply
typecast user input as required.

Either that, or it's PHP's fault (as the Python people would say).









On Wed, Mar 14, 2012 at 3:46 PM, Ferenc Kovacs <tyra3l@...il.com> wrote:

>
>
> On Wed, Mar 14, 2012 at 2:39 PM, Ursu Mihail <mishka.ursu@...oo.com>wrote:
>
>> Drupal 7.x Search Module - Full Path Disclosure
>> ==============
>> Summary
>>
>> Full path disclosure due to insufficient input validation in the search
>> module.
>> ==============
>> Description
>>
>> Performing a search with the "keys" parameter set as an array, an error
>> message shows the full path of the Drupal installation, leading to possible
>> further attacks.
>> For the error messages to be displayed, php.ini's display_errors must be
>> On.
>> Authentication: Not Needed
>> ==============
>> Mitigation
>>
>> Correct input validation for the "key" parameters
>> ==============
>> Exploit PoC
>>
>> example.com/?q=search&keys[]=securitate.md
>> ==============
>> Affected Versions
>>
>> Versions 7 < 7.12 are affected.
>> Not tested on 6.
>> ==============
>> Credits
>>
>> Ursu Mihail [ http://securitate.md ]
>> ==============
>> Disclosure Timeline
>>
>> Reported to vendor on 1 Mar 2012.
>> Response from vendor:
>> Disclosure of the path is not considered a security risk.
>> Drupal has a configuration setting which allows PHP warnings to be
>> printed to the screen for debugging purposes... For production websites, it
>> is a good idea to turn this off, and the messages will not be displayed.
>> ==============
>> Comments
>>
>> Unfortunately for them, many sites display errors in production.
>> ==============
>>
>> _______________________________________________
>> Full-Disclosure - We believe in it.
>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>> Hosted and sponsored by Secunia - http://secunia.com/
>>
>
>
> btw. thats a pretty common problem.
> I also reported a similar issue a while back about
> https://dev.twitter.com/search/apachesolr_search/api?page[]=123 it seems
> that the apachesolr_search drupal module also vulnerable. :/
> http://code.google.com/p/twitter-api/issues/detail?id=2271
> --
> Ferenc Kovács
> @Tyr43l - http://tyrael.hu
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>

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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/