Security Bulletin: IBM MQ termination of a client application causes denial of service (CVE-2017-1235)

Summary

Termination during an MQGET call of a client application running on a channel with SHARECNV=1, could cause a SIGSEGV and termination of the channel agent process.

Vulnerability Details

CVEID: CVE-2017-1235**
DESCRIPTION:** IBM MQ could allow an authenticated user to cause a premature termination of a client application thread, which could potentially cause denial of service.
CVSS Base Score: 3.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/123914 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 MQ V8.0

IBM MQ V8.0.0.6 and earlier maintenance levels.

IBM MQ V9.0 Long Term Support Release

IBM MQ V9.0.0.1 and earlier maintenance levels.

IBM MQ V9.0 Continuous Delivery Release

IBM MQ Continuous delivery update 9.0.3 and earlier maintenance levels.

Remediation/Fixes

IBM MQ V8.0

Apply 8.0.0.7 maintenance level.

IBM MQ V9.0 Long Term Support Release

Apply 9.0.0.2 maintenance level.

IBM MQ V9.0 Continuous Delivery Release

Apply continuous delivery update 9.0.4 or later