CVE-2017-3207 Deserialization in WebORB for Java

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code via insecure Java deserialization in WebORB for Java's AMF3 implementation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-3207?

CVE-2017-3207 is a critical unsafe deserialization vulnerability in Midnight Coders WebORB for Java, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Java implementations of AMF3 deserializers in WebORB for Java by Midnight Coders, version 5.1.1.0, 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.

Weakness: CWE-502

Which versions are affected by CVE-2017-3207?

It affects 1 product.

Products include Themidnightcoders Weborb for Java.

How do I fix CVE-2017-3207?

No fix has been published for CVE-2017-3207 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2017-3207 being exploited?

There is no known exploitation of CVE-2017-3207 in the wild and no public exploit code.

Sources

Also known as GHSA-9258-4rxh-qw5j.

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