This update for tomcat fixes the following issues:
- Update to Tomcat 9.0.35. See changelog at http://tomcat.apache.org/tomcat-9.0-doc/changelog.html#Tomcat_9.0.35_(markt)
CVE-2020-9484 (bsc#1171928) Apache Tomcat Remote Code Execution via session persistence
If an attacker was able to control the contents and name of a file on a server configured to use the PersistenceManager, then the attacker could have triggered a remote code execution via deserialization of the file under their control.