The following updates has been released for Debian GNU/Linux:
Debian GNU/Linux 7 Extended LTS:Tomcat7 and OTRS2 Updates for Debian
ELA-51-1 tomcat7 security update
Debian GNU/Linux 8 LTS:
DLA 1544-1: tomcat7 security update
Debian GNU/Linux 9:
DSA 4317-1: otrs2 security update