Security Bulletin: IBM MQ is affected by a denial of service vulnerability due to an error within the CCDT and channel synchronization logic (CVE-2022-40237)

Summary

An issue was identifed within the MQ channel processing when a channel CCDT file contains invalid or corrupted records.

Vulnerability Details

CVEID:CVE-2022-40237
**DESCRIPTION:**IBM MQ is vulnerable to a denial of service attack due to an error within the CCDT and channel synchronization logic. IBM X-Force ID: 235727.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/235727 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Affected Products and Versions

The following installable MQ components are affected by the vulnerability:

• Runtime
• Standard Client

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 IT42194.

IBM MQ 8.0

Apply ifix for IT42194

IBM MQ 9.0 LTS

Apply cumulative security update 9.0.0.16

IBM MQ 9.1 LTS

Apply ifix for IT42194

IBM MQ 9.2 LTS

Apply fix pack 9.2.0.10

IBM MQ 9.3 LTS

Apply cumulative security update 9.3.0.4

IBM MQ 9.1 CD, 9.2 CD and 9.3 CD

Upgrade to IBM MQ 9.3.2

Workarounds and Mitigations

None