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Security Bulletin: IBM MQ cluster channel definition causes denial of service to cluster (CVE-2016-9009)

Security Bulletin


A cluster receiver channel definition could be altered in a way that leads to corruption in cluster repository information. This could lead to malfunction and a potential denial of service for an MQ cluster.

Vulnerability Details

CVEID: CVE-2016-9009
IBM MQ could allow an authenticated user with authority to create a cluster object to cause a denial of service to MQ clustering.
CVSS Base Score: 3.1
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM WebSphere MQ V7.1

IBM WebSphere MQ V7.1.0.8 and earlier maintenance levels.

IBM WebSphere MQ V7.5

IBM WebSphere MQ V7.5.0.7 and earlier maintenance levels.


IBM MQ V8.0.0.5 and earlier maintenance levels.

IBM MQ V9.0 Long Term Support Release

IBM MQ V9.0.0.0 only.

IBM MQ V9.0 Continuous Delivery Release

IBM MQ Continuous delivery update 9.0.1 only.


IBM WebSphere MQ V7.1

Apply maintenance level.

IBM WebSphere MQ V7.5

Apply maintenance level.


Apply maintenance level.

IBM MQ V9.0 Long Term Support Release

Apply maintenance level.

IBM MQ V9.0 Continuous Delivery Release

Apply the latest available continuous delivery release.

Workarounds and Mitigations


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Important note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.


Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

21 Nov 2017: Added Version 7.1 applicability
05 Jul 2017: Added Version 7.5 applicability
21 Jun 2017: Added Version 9.0 Long Term Support Release applicability
11 Apr 2017: Added Version 9.0 Continuous Delivery Release applicability
20 Feb 2017: Original version 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.

Document information

More support for: WebSphere MQ

Software version: 7.1, 7.5, 8.0, 9.0, 9.0.1

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows

Software edition: All Editions

Reference #: 1998647

Modified date: 22 November 2017