CVE-2019-4039: Security Bulletin: IBM MQ is vulnerable to a denial of service attack within the error logging function (CVE-2019-4039)

Summary

A vulnerability was found within the error logging function that meant that a local attacker could cause an overwrite of arbitrary MQ files and cause a denial of service attack against IBM MQ queue managers.

Vulnerability Details

CVEID: CVE-2019-4039
DESCRIPTION: IBM MQ could allow a local attacker to cause a denial of service within the error log reporting system.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/156163 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM MQ V8

versions 8.0.0.0 - 8.0.0.11

IBM MQ V9 LTS

versions 9.0.0.0 - 9.0.0.6

IBM MQ V9.1 LTS

versions 9.1.0.0 - 9.1.0.1

IBM MQ V9.1 CD

versions 9.1.1

Remediation/Fixes

IBM MQ V8

IBM MQ V9 LTS

IBM MQ V9.1 LTS

IBM MQ V9.1 CD

Workarounds and Mitigations

None

References

Off

Acknowledgement

The vulnerability was reported to IBM by Josh McIver

Change History

16 May 2019: Original version published
12 June 2019: Updated to confirm affected levels of IBM MQ version 9.0 and provide link to mitigation for this release
28 August 2019: Updated 9.0 LTS remediation instructions to specify FixPack to apply.

*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.

Disclaimer

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

Internal Use Only

Product Record: 129161

Advisory: 14834

Document Location

Worldwide

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