DSChat Input Validation Flaw Permits Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1016148
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SecurityTracker URL: http://securitytracker.com/id?1016148
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: May 24 2006
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Impact: Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Exploit Included: Yes
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Version(s): 1.0 and prior versions
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Description: A vulnerability was reported in DSChat. A remote user can conduct cross-site scripting attacks.
The software does not properly filter HTML code from user-supplied input in the chatbox before displaying the input. A remote user
can submit specially crafted input that, when viewed by a target user, will cause arbitrary scripting code to be executed by the
target user's browser. The code will originate from the site running the DSChat software and will run in the security context of
that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated
with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as
the target user.
Nomenumbra discovered this vulnerability.
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Impact: A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the
DSChat software, access data recently submitted by the target user via web form to the site, or take actions on the site acting
as the target user.
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Solution: No solution was available at the time of this entry.
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Vendor URL: www.dvondrake.com/products.php (Links to External Site)
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Cause: Input validation error
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Underlying OS: Linux (Any), UNIX (Any), Windows (Any)
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Reported By: zerogue@gmail.com
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Message History:
None.
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Source Message Contents
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Date: 22 May 2006 19:07:26 -0000
From: zerogue@gmail.com
Subject: DSChat <= 1.0 XSS
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DSChat <= 1.0 XSS
Discovered by: Nomenumbra
Date: 21/5/2006
impact:moderate (possible defacement)
DSChat is a PHP-based chatscript which does no filtering
against XSS whatsoever, thus allowing anyone to insert
html or javascript in the chatbox.
Nomenumbra
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