CVE-2017-3199: GraniteDS, version 3.1.1.GA, Action Message Format (AMF3) Java implementation is vulnerable to insecure deserialization

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2018-06-11 · updated 2026-06-17
Weakness: CWE-502

Description

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.

Affected products

Graniteds: 3.1.1

References

http://www.securityfocus.com/bid/97382
http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
https://codewhitesec.blogspot.com/2017/04/amf.html
https://www.kb.cert.org/vuls/id/307983
http://www.securityfocus.com/bid/97382
http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-execution
https://codewhitesec.blogspot.com/2017/04/amf.html
https://www.kb.cert.org/vuls/id/307983

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