[FD] Exploiting java deserialization vulnerabilities in crypto contexts - a java applet case-study

[RedTimmy Security <redazione@xxxxxxxxxxx>]

Hi,

regardless of being a deprecated technology, there are still many legacy 
applications relying on java applets out there. A bit of time ago we were 
involved in an atypical web application penetration test.

The difficulty consisted in the fact that the java serialized payload 
responsible for triggerring the vulnerability was located inside the 
authenticated part of a digital certificate, signed client-side with a private 
key stored in a HSM module.

In case you are interested, the full story is here: 
https://www.redtimmy.com/web-application-hacking/how-we-invented-enumjavalibs-while-finding-a-java-deserialization-bug-and-achieving-rce/

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