Security Bulletin: Potential security vulnerability in IBM WebSphere Application Server in Bluemix MQ JCA Resource adapter (CVE-2016-0360)

Summary

There is a potential security vulnerability with the WebSphere Application Server MQ JCA Resource adapter.

Vulnerability Details

CVEID: CVE-2016-0360**
DESCRIPTION:** IBM Websphere MQ JMS 7.0.1, 7.1, 7.5, 8.0, and 9.0 client provides classes that deserialize objects from untrusted sources which could allow a malicious user to execute arbitrary Java code by adding vulnerable classes to the classpath.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/111930 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere Application Server:

• Version 9.0
• Version 8.5.5

Remediation/Fixes

To patch an existing service instance****or a new instance, you must apply the following maintenance manually. Refer to the IBM WebSphere Application Server bulletin listed below:

Security Bulletin: Potential security vulnerability in WebSphere Application Server MQ JCA Resource adapter (CVE-2016-0360)

Workarounds and Mitigations

IBM WebSphere MQ supports Object Messages as part of the JMS specification, however ObjectMessage usage is discouraged. To mitigate this vulnerability, message types that do not contain this security flaw, such as JSON or XML, should be used. To ensure that messages come from recognized senders, a security mechanism, such as MQ’s AMS (Advanced Message Security), can be used.