full-disclosure - Re: Facebook Attach EXE Vulnerability

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Message-ID: <CAMZ4ocvAO4ofpVXTDZ62s29MBBvMBxbKtF5R6c7kq1o8YxZ0jw@mail.gmail.com>
Date: Fri, 28 Oct 2011 14:56:24 -0300
From: Pablo Ximenes <pablo@...en.es>
To: Nathan Power <np@...uritypentest.com>
Cc: Full Disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Facebook Attach EXE Vulnerability

I see. I have seen this kinda behavior from vendors too often. I supose the
reason for this is the flood of false positives. I think they need a better
way to sift the wheat from the chaff.

Congrats for your work!

2011/10/28 Nathan Power <np@...uritypentest.com>

> I was basically told that Facebook didn't see it as an issue and I was
> puzzled by that. Ends up the Facebook security team had issues reproducing
> my work and that's why they initially disgarded it. After publishing, the
> Facebook security team re-examined the issue and by working with me they
> seem to have been able to reproduce the bug.
>
>
> Nathan Power
> www.securitypentest.com
>
>
> On Fri, Oct 28, 2011 at 11:18 AM, Pablo Ximenes <pablo@...en.es> wrote:
>
>> Not fixed yet. At least not yesterday when I checked.
>>
>> Nathan, didn't Facebook ask for some time to fix this bug after they have
>> acknowledged it?
>>
>>
>> Pablo Ximenes
>> <http://ximen.es/>http://ximen.es/
>> <http://twitter.com/pabloximenes>http://twitter.com/pabloximenes
>>
>> Em 27/10/2011, às 19:29, Joshua Thomas < <rappercrazzy@...il.com>
>> rappercrazzy@...il.com> escreveu:
>>
>>  can't believe such was on FB  .... wahahaha !!! lol ....rofl ...
>>
>> When was this discovered and fixed ?
>>
>>
>> On Thu, Oct 27, 2011 at 1:02 AM, Nathan Power < <np@...uritypentest.com><np@...uritypentest.com>
>> np@...uritypentest.com> wrote:
>>
>>>
>>> ---------------------------------------------------------------------------------
>>> 1. Summary:
>>>
>>> When using the Facebook 'Messages' tab, there is a feature to attach a
>>> file.
>>> Using this feature normally, the site won't allow a user to attach an
>>> executable file.
>>> A bug was discovered to subvert this security mechanisms. Note, you do
>>> NOT have
>>> to be friends with the user to send them a message with an attachment.
>>>
>>>
>>> ---------------------------------------------------------------------------------
>>>
>>> Read the rest of this advisory here:
>>>
>>> <http://www.securitypentest.com/2011/10/facebook-attach-exe-vulnerability.html><http://www.securitypentest.com/2011/10/facebook-attach-exe-vulnerability.html>
>>> http://www.securitypentest.com/2011/10/facebook-attach-exe-vulnerability.html
>>>
>>>
>>> Enjoy :)
>>>
>>>
>>> Nathan Power
>>> <http://www.securitypentest.com> <http://www.securitypentest.com>
>>> www.securitypentest.com
>>>
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>>
>> _______________________________________________
>> Full-Disclosure - We believe in it.
>> Charter: <http://lists.grok.org.uk/full-disclosure-charter.html><http://lists.grok.org.uk/full-disclosure-charter.html>
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