The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debian jessie and the tomcat6 and libtomcat6-java packages before 6.0.35-1ubuntu3.8 on Ubuntu 12.04 LTS, the tomcat7 and libtomcat7-java packages before 7.0.52-1ubuntu0.7 on Ubuntu 14.04 LTS, and tomcat8 and libtomcat8-java packages before 8.0.32-1ubuntu1.2 on Ubuntu 16.04 LTS allows local users with access to the tomcat account to gain root privileges via a symlink attack on the Catalina log file, as demonstrated by /var/log/tomcat7/catalina.out.
https://www.exploit-db.com/exploits/40450/
https://security.netapp.com/advisory/ntap-20180731-0002/
https://security.gentoo.org/glsa/201705-09
https://access.redhat.com/errata/RHSA-2017:0456
https://access.redhat.com/errata/RHSA-2017:0455
http://www.ubuntu.com/usn/USN-3081-1
http://www.securitytracker.com/id/1036845
http://www.securityfocus.com/bid/93263
http://www.securityfocus.com/archive/1/539519/100/0/threaded
http://www.debian.org/security/2016/dsa-3670
http://www.debian.org/security/2016/dsa-3669