Description
The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.
Remediation
References
Related Vulnerabilities
PHP Improper Input Validation Vulnerability (CVE-2007-3998)
WordPress Plugin Really Simple Share Cross-Site Request Forgery (2.9.9)
WordPress Plugin AdRotate-Ad manager & AdSense Ads 'adrotate-out.php' SQL Injection (3.6.6)
Jboss EAP Permissions, Privileges, and Access Controls Vulnerability (CVE-2012-3370)