Vulnerability Development: RE: vBulletin Security Vulnerability

["Ferruh Mavituna" <ferruh () mavituna com>]

Hello;

This must be an option or something like that in new vBulletin, After a
small search on Google you can find all "vBulletin v3.0.0 Beta 7" forums.

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"We can only assume that this vulnerability was found in a site running code
modified from that supplied by Jelsoft."
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Not "a site", most of them vulnerable. If you provide this customization yes
vBulletin is not vulnerable but "Jelsoft customizations" are vulnerable.

And most of these forums have register.php "Standard / Quick" selection and
"regtype" hidden field. 

Almost %80 of your customers are vulnerable.


Ferruh.Mavituna
http://feruh.mavituna.com
PGPKey : http://ferruh.mavituna.com/PGPKey.asc

-----Original Message-----
From: Kier Darby [mailto:kier () vbulletin com] 
Sent: Wednesday, January 21, 2004 10:36 PM
To: vuln-dev () securityfocus com
Subject: Re: vBulletin Security Vulnerability

In-Reply-To: <20040120190824.GA4674 () natalya rebby com>

No patch has been issued for this 'vulnerability' because no vulnerability
exists.



There is no hidden field called "reg_site", nor any $reg_site variable
anywhere in the vBulletin 2 or vBulletin 3 source code or templates, nor has
it ever existed.



We can only assume that this vulnerability was found in a site running code
modified from that supplied by Jelsoft.