Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8.5.7, and 9.x before 9.0.0.M12 if JmxRemoteLifecycleListener is used and an attacker can reach JMX ports. The issue exists because this listener wasn't updated for consistency with the CVE-2016-3427 Oracle patch that affected credential types.
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
https://usn.ubuntu.com/4557-1/
https://security.netapp.com/advisory/ntap-20180607-0001/
https://access.redhat.com/errata/RHSA-2017:0456
https://access.redhat.com/errata/RHSA-2017:0455
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
http://www.debian.org/security/2016/dsa-3738
http://tomcat.apache.org/security-9.html
http://tomcat.apache.org/security-8.html
http://tomcat.apache.org/security-7.html
http://tomcat.apache.org/security-6.html
http://svn.apache.org/viewvc?view=revision&revision=1767684
http://svn.apache.org/viewvc?view=revision&revision=1767676
http://svn.apache.org/viewvc?view=revision&revision=1767656
http://svn.apache.org/viewvc?view=revision&revision=1767644