IBM Support

Security Bulletin: IBM MQ is vulnerable to a denial of service attack (CVE-2024-31919)

Security Bulletin


Summary

IBM MQ has addressed a denial of service vulnerability caused by an error processing messages when an API Exit using MQBUFMH is used.

Vulnerability Details

CVEID:   CVE-2024-31919
DESCRIPTION:   IBM MQ, in certain configurations, is vulnerable to a denial of service attack caused by an error processing messages when an API Exit using MQBUFMH is used.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/290259 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

Affected Product(s) Version(s)
IBM MQ 9.0 LTS
IBM MQ 9.1 LTS
IBM MQ 9.2 LTS
IBM MQ 9.3 LTS
IBM MQ 9.3 CD

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

Remediation/Fixes

This issue was addressed under APAR IT45510.

IBM MQ version 9.0 LTS

Apply Cumulative Security Update 9.0.0.26 

IBM MQ version 9.1 LTS

Apply Cumulative Security Update 9.1.0.22 

IBM MQ version 9.2 LTS

Apply Cumulative Security Update 9.2.0.26  

IBM MQ version 9.3 LTS

Apply Fix Pack 9.3.0.20  

IBM MQ version 9.3 CD

Upgrade to IBM MQ version 9.4 

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

xx June 2024: Initial Publication

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF051","label":"Linux on IBM Z Systems"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"9.0.0, 9.1.0, 9.2.0, 9.3.0","Edition":"","Line of Business":{"code":"LOB67","label":"IT Automation \u0026 App Modernization"}}]

Document Information

Modified date:
26 June 2024

UID

ibm17157979