full-disclosure - CVE-2007-1871: Cross site scripting in chcounter 3.1.3

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Message-Id: <200704120142.11758.mail@hboeck.de>
Date: Thu, 12 Apr 2007 01:42:11 +0200
From: "Hanno Böck" <mail@...eck.de>
To: vulnwatch@...nwatch.org, full-disclosure@...ts.grok.org.uk,
	bugtraq@...urityfocus.com
Subject: CVE-2007-1871: Cross site scripting in chcounter
	3.1.3

Cross site scripting in chcounter 3.1.3

security advisory

References:
 http://chcounter.org/
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1871

Description:
 Cross site scripting describes attacks that allow to insert malicious
 html or javascript code via get or post forms. This can be used to steal
 session cookies.
 chcounter is some free software php script for website statistics. The
 login form on the start page can be used to insert javascript code.

Workaround/Fix:
 There's no vendor fix.
 Vendor has been contacted 2007-03-11 and has not answered yet.

Sample Code:
 <form method=post action=http://chcounterinstallation/stats/>
 <input type=hidden name=login_name value='"><script>alert(1)</script>'>
 <input type=submit>
 </form>

CVE Information:
 The Common Vulnerabilities and Exposures (CVE) project has assigned the
 name CVE-2007-1871 to this issue. This is a candidate for inclusion in
 the CVE list (http://cve.mitre.org/), which standardizes names for
 security problems.

Credits and copyright:
 This vulnerability was discovered by Hanno Boeck of schokokeks.org
 webhosting.
 It's licensed creative commons attribution:
 http://creativecommons.org/licenses/by/3.0/

 Hanno Boeck, 2007-04-12, www.hboeck.de

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