TippingPoint Zero Day Initiative

Oracle WebLogic RMI Registry UnicastRef Object Deserialization of Untrusted Data Remote Code Execution Vulnerability

ZDI-17-055: January 24th, 2017


CVSS Score

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Oracle WebLogic. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the insufficient blacklisting of certain Java objects. The issue lies in the failure to properly validate user-supplied data which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.

Vendor Response

Oracle has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2016-06-30 - Vulnerability reported to vendor
    2017-01-24 - Coordinated public release of advisory


This vulnerability was discovered by:
    Tenable Network Security - Jacob Baines