Security Bulletin: IBM MQ is vulnerable to a denial of service attack (CVE-2023-26285)

Summary

IBM MQ is vulnerable to a denial of service attack caused by an error processing invalid data from a compromised client.

Vulnerability Details

CVEID:CVE-2023-26285
**DESCRIPTION:**IBM MQ could allow a remote attacker to cause a denial of service due to an error processing invalid data.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/248418 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 IT43381

IBM MQ 8.0

Users with an appropriate extended support entitlement should contact IBM support.

IBM MQ 9.0 LTS

Apply cumulative security update 9.0.0.17

IBM MQ 9.1 LTS

Apply fix pack 9.1.0.15

IBM MQ 9.2 LTS

Apply cumulative security update 9.2.0.11

IBM MQ 9.3 LTS

Apply fix pack 9.3.0.5

IBM MQ 9.1 CD, 9.2 CD and 9.3 CD

Upgrade to IBM MQ 9.3.2 and apply cumulative security update 9.3.2.1

Workarounds and Mitigations

None