Security Bulletin: IBM MQ is affected by a denial of service vulnerability (CVE-2023-28513)

Summary

IBM MQ is affected by a denial of service vulnerability caused by improper message handling.

Vulnerability Details

CVEID:CVE-2023-28513
**DESCRIPTION:**IBM MQ, under certain configurations, is vulnerable to a denial of service attack caused by an error processing messages.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/250397 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

The following installable MQ components are affected by the vulnerability:

- Server

If you are running any of these listed components, please apply the remediation/fixes as described below. For more information on the definitions of components used in this list see <https://www.ibm.com/support/pages/installable-component-names-used-ibm-mq-security-bulletins&gt;

Remediation/Fixes

This issue was resolved under APAR IT42945

IBM MQ 9.0 LTS

Apply cumulative security update 9.0.0.18

IBM MQ 9.1 LTS

Apply cumulative security update 9.1.0.16

IBM MQ 9.2 LTS

Apply fix pack 9.2.0.15

IBM MQ 9.3 LTS

Apply cumulative security update 9.3.0.6

IBM MQ 9.2 CD and 9.3 CD

Upgrade to IBM MQ Version 9.3.3

Workarounds and Mitigations

None