Trustwave SpiderLabs researcher Asaf Orpani has discovered an SQL injection vulnerability in versions 3.2 through 3.4.4 of Joomla, a popular open-source Content Management System (CMS). Combining that vulnerability with other security weaknesses, our Trustwave SpiderLabs researchers are able to gain full administrative access to any vulnerable Joomla site. Joomla had a 6.6 percent share of the market for website CMSs as of October 20, 2015 according to W3Techs—second only to WordPress. Internet services company BuiltWith estimates that as many as 2.8 million websites worldwide use Joomla. CVE-2015-7297, CVE-2015-7857, and CVE-2015-7858 cover the SQL injection vulnerability and various mutations related to it. CVE-2015-7857 enables an unauthorized remote user to gain administrator privileges by hijacking the administrator session. Following exploitation of the vulnerability, the attacker may gain full control of the web site and execute additional attacks. The vulnerability can be exploited in Joomla versions 3.2 (released in November 2013) through version 3.4.4. Because the vulnerability is found in a core module that doesn't require any extensions, all websites that use Joomla versions 3.2 and above are vulnerable. Asaf also uncovered the related vulnerabilities CVE-2015-7858 and CVE-2015-7297 as part of his research. Trustwave SpiderLabs recommends that ALL Joomla users update their Joomla installations to version 3.4.5. PoC: GET index.php?option=com_contenthistory&view=history&list[ordering]=&item_id=75&type_id=1 &list[select]= (select 1 FROM(select count(*),concat((select (select concat(session_id)) FROM jml_session LIMIT 0,1),floor(rand(0)*2))x FROM information_schema.tables GROUP BY x)a) Youtube; https://www.youtube.com/watch?v=DOpryDLFSxM More: https://www.trustwave.com/Resources/SpiderLabs-Blog/Joomla-SQL-Injection-Vulnerability-Exploit-Results-in-Full-Administrative-Access/