CVE-2020-9484 – tomcat: deserialization flaw in session persistence storage leading to RCE

https://notcve.org/view.php?id=CVE-2020-9484

20 May 2020 — When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d)... • https://packetstorm.news/files/id/157924 • CWE-502: Deserialization of Untrusted Data •