[UNIX] PHProxy Cross Site Scripting

From: SecuriTeam (support_at_securiteam.com)
Date: 12/27/04

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Date: 27 Dec 2004 11:37:55 +0200

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      PHProxy Cross Site Scripting
    ------------------------------------------------------------------------

    SUMMARY

     <http://www.whitefyre.com/poxy/> PHProxy is "a web HTTP (for now; FTP is
    not supprted yet) proxy programmed in PHP designed to bypass firewalls and
    other proxy restrictions through a web interface very similar to the
    popular CGIProxy".

    A vulnerability in the PHProxy's handling of incoming user provided data
    allows an attacker to use the PHP script for a cross site scripting
    vulnerability.

    DETAILS

    Vulnerable Systems:
     * PHProxy version 0.3 and prior

    There is exists an XSS vulnerability where a malicious user could inject
    any evil HTML tags or JavaScript into PHProxy's web page. The
    vulnerability can be exploited by putting arbitrary code in 'error'
    parameter of the PHProxy program.

    Example:
    http://vulnerable/poxy/index.php?error=html%20code%20could%20be%20easily%20injected%20here

    ADDITIONAL INFORMATION

    The information has been provided by <mailto:boshcash@msn.com> Boshcash.

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