Weak Deserializer

org.apache.dubbo:dubbo and com.alibaba:dubbo are using weak deserializers. An attacker is able to provoke the library to use a weak deserializer to be used by tampering with the byte preamble flags, not following the server's instruction...

Deserializer tampering in Apache Dubbo

Each Apache Dubbo server will set a serialization id to tell the clients which serialization protocol it is working on. But for Dubbo versions before 2.7.8 or 2.6.9, an attacker can choose which serialization id the Provider will use by tampering with the byte preamble flags, aka, not following t...