Chatty :) 'username' Input Validation Hole Cross-Site Scripting
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SecurityTracker Alert ID: 1016152
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SecurityTracker URL: http://securitytracker.com/id?1016152
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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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Description: A vulnerability was reported in Chatty. A remote user can conduct cross-site scripting attacks.
The software does not properly filter HTML code from user-supplied input in the username field before displaying the input. A remote
user can submit a specially crafted username 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 Chatty 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 reported 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
Chatty 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.olivo.net/software/chatty/ (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 19:06:25 -0000
From: zerogue@gmail.com
Subject: Chatty improper input sanitizing
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Chatty improper input sanitizing
Discovered by: Nomenumbra
Date: 21/5/2006
impact:moderate (possible defacement)
Chatty is a PHP-based chatscript allowing users to chat over the web.
Subscribing with a username like this: <script>alert(%22xss%22)</script>
would cause major xss in the chatroom.
Nomenumbra
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