Several security issues were fixed in Tomcat.
It was discovered that Tomcat incorrectly handled the RMI registry when configured with the JMX Remote Lifecycle Listener. A local attacker could possibly use this issue to obtain credentials and gain complete control over the Tomcat instance. (CVE-2019-12418)
27 January 2020
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Tomcat.
It was discovered that Tomcat incorrectly handled the RMI registry when configured with the JMX Remote Lifecycle Listener. A local attacker could possibly use this issue to obtain credentials and gain complete control over the Tomcat instance. (CVE-2019-12418)
It was discovered that Tomcat incorrectly handled FORM authentication. A remote attacker could possibly use this issue to perform a session fixation attack. (CVE-2019-17563)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
Vulmon