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Security Bulletin: IBM MQ is vulnerable to a denial of service attack caused by an error processing messages. (CVE-2021-38875)

Security Bulletin


Summary

An issue was identified with IBM MQ 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-2021-38875
DESCRIPTION:   IBM MQ is vulnerable to a denial of service attack caused by an error processing messages.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208398 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/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 9.1 CD
IBM MQ 9.2 CD

Remediation/Fixes

This issue was resolved by APAR IT36179

IBM MQ version 8.0

Apply version 8.0 cumulative security update "CSU01"

IBM MQ version 9.0 LTS

Apply FixPack 9.0.0.12

IBM MQ version 9.1 LTS

Apply FixPack 9.1.0.9

IBM MQ version 9.2 LTS

Apply FixPack 9.2.0.4

IBM MQ version 9.1 CD and 9.2 CD

Upgrade to IBM MQ 9.2.4

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Off

Change History

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.

Document Location

Worldwide

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Document Information

Modified date:
22 November 2021

UID

ibm16517672