Description
Joomla! Core is prone to multiple vulnerabilities, including cross-site scripting and information disclosure vulnerabilities. Exploiting these issues could allow an attacker to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site, allowing the attacker to steal cookie-based authentication credentials, or to obtain sensitive information that may help in launching further attacks. Joomla! Core versions ranging from 1.7.3 and up to and including 3.7.2 are vulnerable.
Remediation
Update to Joomla! Core version 3.7.3 or latest
References
https://github.com/xyringe/CVE-2017-9934
https://developer.joomla.org/security-centre/696-20170601-core-information-disclosure
https://developer.joomla.org/security-centre/697-20170602-core-xss-vulnerability.html
Related Vulnerabilities
MediaWiki Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2010-1648)
PHP CVE-2009-3292 Vulnerability (CVE-2009-3292)
WordPress Plugin Export Users to CSV CSV Injection (1.4.2)
WordPress Plugin Social Share Icons & Social Share Buttons Security Bypass (3.0.2)
WordPress Plugin Acunetix Secure WordPress Cross-Site Scripting (3.0.3)