CVE-2017-3199: Deserialization of Untrusted Data

May 13, 2022 (updated July 25, 2023)

The Java implementation of GraniteDS, version 3.1.1.GA, AMF3 deserializers 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.

References

www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
codewhitesec.blogspot.com/2017/04/amf.html
github.com/advisories/GHSA-8m35-r25c-qr56
nvd.nist.gov/vuln/detail/CVE-2017-3199
web.archive.org/web/20210124021547/http://www.securityfocus.com/bid/97382
www.kb.cert.org/vuls/id/307983

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