The Tomcat package on Red Hat Enterprise Linux (RHEL) 5 through 7, JBoss Web Server 3.0, and JBoss EWS 2 uses weak permissions for (1) /etc/sysconfig/tomcat and (2) /etc/tomcat/tomcat.conf, which allows local users to gain privileges by leveraging membership in the tomcat group.
rhn.redhat.com/errata/RHSA-2016-2045.html
rhn.redhat.com/errata/RHSA-2016-2046.html
rhn.redhat.com/errata/RHSA-2017-0457.html
www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html
www.securityfocus.com/bid/93478
access.redhat.com/errata/RHSA-2017:0455
access.redhat.com/errata/RHSA-2017:0456
bugzilla.redhat.com/show_bug.cgi?id=1367447