It was discovered that there was a potential remote code execution via
deserialization of local files on the filesystem within
tomcat7, a server for
HTTP and Java “servlets”.
For Debian 7 Wheezy, these problems have been fixed in version 7.0.28-4+deb7u25.
We recommend that you upgrade your tomcat7 packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/