There is a potential security vulnerability with the WebSphere Application Server MQ JCA Resource adapter.
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
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.
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Vulnerability discovery by Matthias Kaiser of Code White (www.code-white.com)
3 April 2017: original document published
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
15 June 2018