bugtraq - XSS in MyProxy 20030629

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Message-ID: <20040311124347.DF2B523E1D@chernobyl.investici.org>
Date: Thu, 11 Mar 2004 12:43:47 -0000
From: "Donato Ferrante" <fdonato@...istici.org>
To: <bugtraq@...urityfocus.com>
Subject: XSS in MyProxy 20030629

                           Donato Ferrante

Application:  MyProxy
              http://www.dietrich.cx/devel/myproxy/

Version:      20030629

Bug:          cross site scripting

Author:       Donato Ferrante
              e-mail: fdonato@...istici.org
              web:    www.autistici.org/fdonato

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1. Description
2. The bug
3. The code
4. The fix

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----------------
1. Description:
----------------

Vendor's Description:

"MyProxy is a privacy-enhancing personal HTTP 1.1 proxy.
Arbitrary URLs can be blocked by regular expression patterns and
optionally replaced by transparent GIFs. 
Cookies can be controlled based on server/domain name.
The "Referer", "User-Agent", and "From" HTTP headers can be dealt
with in various ways. All user settings are configured through an
HTML user interface."

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------------
2. The bug:
------------

The input strings are not filtered by the proxy server so they will
appear in the returned page.

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-------------
3. The code:
-------------

To test the vulnerability:

http://[host]:8080/<script>alert("Test")</script>

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------------
4. The fix:
------------

Vendor was contacted.
Bug will be fixed in the next version.

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