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Security Bulletin: IBM MQ is vulnerable to a denial of service attack caused by an issue processing message properties. (CVE-2021-29843)

Security Bulletin


Summary

An issue was identified with IBM MQ queue manager's message processing code that could allow an authenticated attacker (with authority to connect to the queue manager and put messages) to execute a denial of service attack against the queue manager with a malformed message.

Vulnerability Details

CVEID:   CVE-2021-29843
DESCRIPTION:   IBM MQ 9.1 LTS, 9.1 CD, 9.2 LTS, and 9.2CD is vulnerable to a denial of service attack caused by an issue processing message properties. IBM X-Force ID: 205203.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/205203 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s) Version(s)
IBM MQ 8.0
IBM MQ 9.0 LTS
IBM MQ 9.1 LTS
IBM MQ 9.2 LTS
IBM MQ 9.2 CD

Remediation/Fixes

This issue was fixed under APAR IT35489

IBM MQ v8

Apply 8.0.0.16 cumulative security update (CSU) 01 or later CSU

IBM MQ v9.0 LTS

Apply FixPack 9.0.0.12

IBM MQ v9.1 LTS

Apply FixPack 9.1.0.9

IBM MQ v9.2 LTS

Apply FixPack 9.2.0.3

IBM MQ v9.2 CD

Upgrade to IBM MQ 9.2.4

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

24 Nov 2021: Remove FASTPATH as issue is present when FASTPATH is disabled or enabled.
18 Nov 2021: 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

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Document Information

Modified date:
29 November 2021

UID

ibm16517044