The remote Debian host is missing a security-related update.
Multiple security vulnerabilities have been discovered in the Tomcat servlet and JSP engine, which may result in information disclosure, the bypass of CSRF protections and bypass of the SecurityManager.
Upgrade the tomcat7 packages. For the oldstable distribution (wheezy), these problems have been fixed in version 7.0.28-4+deb7u4. This update also fixes CVE-2014-0119 and CVE-2014-0096. For the stable distribution (jessie), these problems have been fixed in version 7.0.56-3+deb8u2.