From: Jim Pangalos (dpangaloslinuxmail.org)
Date: Sun Aug 31 2003 - 21:11:29 CDT

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ZH2003-26SA (security advisory): TSguestbook Ver. 2.1 Cross-Site Scripting
Vulnerability

Published: 31/08/2003

Released: 31/08/2003

Name: TSguestbook (http://www.tsinter.net)

Affected System(s): All versions

Issue: Remote attackers can insect XSS script

Author: Trash-80 - dpangaloslinuxmail.org

Description

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Zone-h Security Team has discovered a flaw in TSguestbook Ver. 2.1.
TSguestbook is an object orientated guestbook. It doesn't require a MySQL
database.

Details

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It's possibile to insert XSS script in the message variable.

For example try this:

Name: Zone-h Security Team

Email: testtest.com

ICQ: 11111111

Homepage: http://www.zone-h.org

Message:<script>alert('Zone-H')</script>

Solution

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The vendor has been contacted and a patch is not yet produced.

Suggestions

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Filter the message variable.

Trash-80 - www.zone-h.org operator

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