bugtraq - TorrentFlux action Script Insertion

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Date: 17 Oct 2006 06:42:14 -0000
From: 3cab7cc7@...sg.stevenroddis.com.au
To: bugtraq@...urityfocus.com
Subject: TorrentFlux action Script Insertion

TorrentFlux “action” Script Insertion

TITLE:
TorrentFlux “action” 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 “action” variable is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in an administrator’s browser session in context of an affected site when the “Activity Log” is viewed.

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.
/admin.php
Line 336:

$output .= ”
“.htmlentities($action, ENT_QUOTES).”

“;

Line 398:

echo “”.htmlentities($action, ENT_QUOTES).”";

ORIGINAL ADVISORY:
http://www.stevenroddis.com.au/2006/10/17/torrentflux-action-script-insertion/