1. OVERVIEW ocPoral CMS 7.1.5 and lower versions are vulnerable to Open URL Redirection. 2. BACKGROUND ocPortal is the website Content Management System (a CMS) for building and maintaining a dynamic website. ocPortal's powerful feature-set means there's always a way to accomplish your vision. Not only does ocPortal's CMS have all the features you'd expect: for instance photo galleries, news, file downloads and community forums/chats, but it does so whilst meeting the highest accessibility and professional standards. It is also smart enough to go beyond page management, to automatically handle search engine optimisation, and provide aggressive hack attack prevention. 3. VULNERABILITY DESCRIPTION ocPoral CMS 7.1.5 and lower versions contain a flaw that allows a remote cross site redirection attack. This flaw exists because the application does not properly sanitise the "redirect" parameter. This allows an attacker to create a specially crafted URL, that if clicked, would redirect a victim from the intended legitimate web site to an arbitrary web site of the attacker's choice. 4. VERSIONS AFFECTED Tested on 7.1.5 5. PROOF-OF-CONCEPT/EXPLOIT http://localhost/ocportal/index.php?page=login&type=misc&redirect=http://attacker.in 6. SOLUTION Upgrade to the latest version. 7. VENDOR ocPortal Development Team http://www.ocportal.com/ 8. CREDIT Aung Khant, http://yehg.net, YGN Ethical Hacker Group, Myanmar. 9. DISCLOSURE TIME-LINE 2012-03-06: notified vendor 2012-03-21: patched version,7.1.6, released 2012-07-29: vulnerability disclosed 10. REFERENCES Original Advisory URL: http://yehg.net/lab/pr0js/advisories/%5Bocportal_7x%5D_open_url_redirection