Re: [Full-disclosure] Improper Character Handling In PHP Based Scripts like PhpBB, IPB etc.

["ad@xxxxxxxxxxxxxxxx" <ad@xxxxxxxxxxxxxxxx>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
 
this range of chars \xA? is known to bug in various applications, this
would have been better h4cky0u to stfu :>

h4cky0u wrote:
> Well this was after i found somebody posing as me on my site -->
> http://www.h4cky0u.org which was actually quite interesting and
> dangerous  (looking from the social engineering point of view).
> 
> Download the following file -
> 
> http://www.h4cky0u.org/poc.txt
> 
> Make sure you download it and not view it from the browser.  Once
> you download that file open it in your text editor. You should see
> something like-
> 
> --desiredusername
> Copy that whole string and try and post it on any PHP Based blog,
> forum etc or register a username with that string. Now what do you
> see? The -- part from --desiredusername is gone! But apparently its
> still there. It still hides within that string(Try and reverse the
> process you just did). Ok so the bug has been confirmed. Now come
> the questions -
> 
> 1) Is this really a bug in PHP (tested with PHP 4.3.11 and later
> versions might as well be affected)? Or am i overlooking something?
> 
> 2) What is the ASCII code of that -- part in the file if it isn't
> just 2 simple hyphens? (Tried all the possible methods but couldnt
> come up with anything positive.)
> 
> 3) What are the possible ways to avoid something like this?
>
> --
> http://www.h4cky0u.org
> (In)Security at its best...
>
> ----------------------------------------------------------------------
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (MingW32)
 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=ZN6t
-----END PGP SIGNATURE-----

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