full-disclosure - Re: WordPress <= 2.8.5 Unrestricted File Upload Arbitrary PHP Code Execution

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Date: Thu, 12 Nov 2009 12:40:47 -0300
From: Martin Aberastegue <xyborg@...il.com>
To: Milan Berger <m.berger@...ject-mindstorm.net>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: WordPress <= 2.8.5 Unrestricted File Upload
	Arbitrary PHP Code Execution

LOL I forgot to add this did not work on my box.


--
Martin Aberastegue
http://www.martinaberastegue.com/



On Thu, Nov 12, 2009 at 10:41 AM, Martin Aberastegue <xyborg@...il.com> wrote:
> The same here tested on Wordpress 2.8.5 / Apache/2.0.63 (Unix)
> mod_ssl/2.0.63 OpenSSL/0.9.7a mod_auth_passthrough/2.1
> mod_bwlimited/1.4 FrontPage/5.0.2.2635 - PHP/5.2.6
>
> Regards
>
> --
> Martin Aberastegue
> http://www.martinaberastegue.com/
>
>
>
> On Thu, Nov 12, 2009 at 9:48 AM, Milan Berger
> <m.berger@...ject-mindstorm.net> wrote:
>> Hi there,
>>
>>> IV. PROOF OF CONCEPT
>>> -------------------------
>>> Browser is enough to replicate this issue. Simply log in to your
>>> wordpress blog as a low privileged
>>> user or admin. Create a new post and use the media file upload
>>> feature to upload a file:
>>>
>>> test-image.php.jpg
>>>
>>> containing the following code:
>>>
>>> <?php
>>>       phpinfo();
>>> ?>
>>>
>>> After the upload you should receive a positive response saying:
>>>
>>> test-vuln.php.jpg
>>> image/jpeg
>>> 2009-11-11
>>>
>>> and it should be possible to request the uploaded file via a link:
>>> http://link-to-our-wp-unsecured-blog.com/wp-content/uploads/2009/11/test-vuln.php.jpg
>>
>> tried this with lighttpd and wordpress 2.8.5 and PHP 5.2.11-pl0-gentoo
>> with Suhosin-Patch 0.9.7
>> Shows a broken image no code executed.
>>
>> --
>> Kind Regards
>>
>> Milan Berger
>> Project-Mindstorm Technical Engineer
>>
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