Deserialization in Midnight Coders Weborb For Java

CVE-2017-3207

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.

Vulnerability class: Insecure Deserialization

EPSS: 0.082 (94.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cret@cert.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cret@cert.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
  • cret@cert.org (Third Party Advisory, x_refsource_MISC)
  • cret@cert.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)

Frequently asked questions

What is CVE-2017-3207?
CVE-2017-3207 is a critical-severity vulnerability in Midnight Coders Weborb For Java, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2018-06-11.
How severe is CVE-2017-3207?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2017-3207 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.