IBM Support

Security Bulletin: IBM MQ Invalid channel protocol flows cause denial of service on HP-UX (CVE-2016-8915)

Security Bulletin


An invalid TSH flow could result in the termination of any channels running on threads within the same responding MCA process on the HP-UX platform.

Vulnerability Details

CVEID: CVE-2016-8915
For an authenticated user with access to the queue manager and queue, IBM MQ might allow that user to deny service to other channels running under the same process.
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 (HP-UX platform)

IBM WebSphere MQ V7.1.0.7 and earlier maintenance levels.

IBM WebSphere MQ V7.5 (HP-UX platform)

IBM WebSphere MQ V7.5.0.7 and earlier maintenance levels.

IBM MQ V8.0 (HP-UX platform)

IBM MQ V8.0.0.5 and earlier maintenance levels.

IBM MQ V9.0 (HP-UX platform)

IBM MQ V9.0.0.0


IBM WebSphere MQ V7.1 (HP-UX platform)

Apply or above maintenance level

IBM WebSphere MQ V7.5 (HP-UX platform)

Apply maintenance level.

IBM MQ V8.0 (HP-UX platform)

Apply maintenance level.

IBM MQ V9.0 (HP-UX platform)

Apply maintenance level

Workarounds and Mitigations


Get Notified about Future Security Bulletins

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.



Change History

02 Jan 2018: Updated version published
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.


Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

[{"Product":{"code":"SSYHRD","label":"IBM MQ"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Channels LU62 \/ TCP","Platform":[{"code":"PF010","label":"HP-UX"}],"Version":"9.0;;;;;;8.0;;;;;;;;7.5;;;;;;;;7.1","Edition":"All Editions","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
15 June 2018