Description
The Java implementation of AMF3 deserializers used in Flamingo amf-serializer by Exadel, version 2.2.0 derives 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.
Remediation
References
https://www.kb.cert.org/vuls/id/307983
https://codewhitesec.blogspot.com/2017/04/amf.html
http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
http://www.securityfocus.com/bid/97380
Related Vulnerabilities
CVE-2017-16114 Vulnerability in npm package marked
CVE-2020-7633 Vulnerability in npm package apiconnect-cli-plugins
CVE-2020-1953 Vulnerability in maven package org.apache.commons:commons-configuration2
CVE-2019-10086 Vulnerability in maven package commons-beanutils:commons-beanutils
CVE-2019-14862 Vulnerability in maven package org.webjars.npm:knockout