CVE-2017-3203

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.

• CWE-502
• CWE-502

• http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-executionThird Party Advisory
• https://codewhitesec.blogspot.com/2017/04/amf.htmlExploit, Mitigation, Third Party Advisory
• https://www.kb.cert.org/vuls/id/307983Third Party Advisory, US Government Resource
• https://www.securityfocus.com/bid/97376Third Party Advisory, VDB Entry
• http://www.securityweek.com/flaws-java-amf-libraries-allow-remote-code-executionThird Party Advisory
• https://codewhitesec.blogspot.com/2017/04/amf.htmlExploit, Mitigation, Third Party Advisory
• https://www.kb.cert.org/vuls/id/307983Third Party Advisory, US Government Resource
• https://www.securityfocus.com/bid/97376Third Party Advisory, VDB Entry

Published

Jun 11, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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