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Date: Thu, 30 Aug 2012 03:25:40 -0700
From: kaveh ghaemmaghami <kavehghaemmaghami@...glemail.com>
To: full-disclosure@...ts.grok.org.uk
Subject: vBulletin and MyBB Vulnerability

How I hijacked users, username and password with posting an image link
in vBulletin and MyBB

Vulnerability details:
I have posted an image link from my web site the image link that I
have posted is protected by basic authentication. I am authenticated
to the protected image folder that I am going to post which means I
can post the link and it will load from forum to me because I am
Authenticated to the protected file but others not. This is the point,
when a vBulletin based forum  trying to load my posted image to users
who trying to read my post a logging massage box going to prompt and
requiring them for logging again with their username and password and
when they fill up prompted massage box with their username and
password I was able to hijack their username and password.

check out attached image

cheers
coolkaveh

Download attachment "aut.jpg" of type "image/jpeg" (21728 bytes)

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