https://bz.apache.org/bugzilla/show_bug.cgi?id=58662
Bug ID: 58662
Summary: blacklist some classes in custom ObjectInputStreams
Product: Tomcat 9
Version: unspecified
Hardware: PC
OS: Mac OS X 10.4
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Tomcat (at least 7 to 9) uses custom ObjectInputStream, since the server can't
control the fact a user add one of the vulnerable libraries in the same
classloader as tomcat (aka common.loader), tomcat should blacklist these
classes.
This can be done with
https://github.com/apache/tomee/blob/master/container/openejb-core/src/main/java/org/apache/openejb/core/rmi/BlacklistClassResolver.java
(adapting the config I guess) and calling check(name) here
https://github.com/apache/tomcat/blob/trunk/java/org/apache/catalina/util/CustomObjectInputStream.java#L74
around classDesc.getName() before loading the class
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