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TorrentFlux startpop.php torrent Script Insertion
From: 566d9bfe () srasg stevenroddis com au
Date: 13 Oct 2006 05:21:02 -0000

http://www.stevenroddis.com.au/2006/10/13/torrentflux-startpopphp-torrent-script-insertion/

TITLE:
TorrentFlux “startpop.php” “torrent” Script Insertion
CRITICAL:
Not Critical

IMPACT:
Cross Site Scripting

WHERE:
From remote

SOFTWARE:
TorrentFlux 2.x

DESCRIPTION:
I have discovered a vulnerability in TorrentFlux, which can be exploited by malicious users to conduct script insertion 
attacks.

Input passed to the “torrent” field of a GET Request 
(/startpop.php?torrent=%22%3E%3Cscript%3Ealert(document.cookies);%3C/script%3E.torrent) is not properly sanitised 
before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in an user’s 
browser session in context of an affected site if a user clicks on a malicious link.

The vulnerability has been confirmed in version 2.1. Other versions may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

/startpop.php

Line 36: Change to: $displayName = htmlentities($displayName, ENT_QUOTES);

(Line 36 is normally empty)

Grant only trusted users access to the application


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