Remote Code Execution Vulnerability in Java AMF3 Deserializers

CVE-2017-3203 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

The Java implementations of AMF3 deserializers in Pivotal/Spring Spring-flex derive class instances from java.io.Externalizable rather than the AMF3 specification's recommendation of flash.utils.IExternalizable. A remote attacker with the ability to spoof or control an RMI server connection may be able to send serialized Java objects that execute arbitrary code when deserialized.

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