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SySS-Advisory: XSS-vulnerability in guestbook-php-script
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Problem discovered:     February  3d   2006
Vendor contacted:     February   7th  2006
Advisory published:     February   13th 2006

AUTHOR: Micha Borrmann (borrmann@syss.de)
        SySS GmbH
        D-72070 Tuebingen / Germany

APPLICATION:    gastbuch
AFFECTED VERSION:   all < 1.3.3 (1.3.2 tested)

Remotely exploitable:   Yes

SEVERITY: Medium

DESCRIPTION:
The guestbook software published on http://www.php4scripte.de/gast.php
allows HTML- and javascriptcode to be injected in the "URL"-field.

EXAMPLE:
http://www.site.com/"<script>alert(123)</script>"

VENDOR STATUS: The vendor published a fixed version (1.3.3) on
http://www.php4scripte.de
less than five hours after the problem was reported.

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