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[Full-Disclosure] WPkontakt message parsing error

From: Jaroslaw Sajko (sloikman.poznan.pl)
Date: Thu Dec 23 2004 - 05:54:55 CST

Product: WPKontakt (<= 3.0.1)
Vendor: Wirtualna Polska (http://kontakt.wp.pl/index.html)
Impact: Remote script execution in Internet Zone
Severity: Medium
Authors: Blazej Miga <blaman.poznan.pl>,
                Jaroslaw Sajko <sloikman.poznan.pl>
Advisory: http://www.man.poznan.pl/security/wpkontakt.html

[ISSUE]

WPkontakt is the another Polish instant messenger. The problem is similiar
to the problems revealed in GG or Tlen.pl - parsing error leading to the
remote script execution.

[DETAILS]

Parsing error while parsing en email addresses allows us to inject
javascript code like this:

test"style="background-image:url(javascript:alert(%22You%20are%20owned!%22>))".wp.pl

The code will execute in Internet Zone.

[SOLUTION]

Please upgrade to the newest version (3.0.1p1)

          Coprights Poznan Supercomputing and Networking Center

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