IBM Support

Security Bulletin: IBM MQ and IBM MQ Appliance are vulnerable to a denial of service attack caused by specially constructed messages. (CVE-2019-4432)

Security Bulletin


Summary

An error was found within IBM MQ and IBM MQ Appliance that allows an attacker to perform a denial of service attack by sending specifically crafted messages to a queue manager. Executing this attack will cause the queue manager to stop responding and CPU usage to increase to a high level.

Vulnerability Details

CVEID: CVE-2019-4432
DESCRIPTION: IBM MQ is vulnerable to a denial of service attack caused by specially constructed messages.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/162889 for the current score
CVSS Environmental Score*: Undefined
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

IBM WebSphere MQ V7.1
versions 7.1.0.0 - 7.1.0.9
 
IBM WepSphere MQ V7.5
versions 7.5.0.0 - 7.5.0.9
 
IBM MQ and IBM MQ Appliance V8
versions 8.0.0.0 - 8.0.0.12
 
IBM MQ V9.0LTS
versions 9.0.0.0 - 9.0.0.7
IBM MQ and IBM MQ Appliance V9.1 LTS
versions 9.1.0.0 - 9.1.0.2
 
IBM MQ and IBM MQ Appliance V9.1 CD
versions 9.1.0 - 9.1.2

Remediation/Fixes

IBM WebSphere MQ V7.1
Contact IBM Support requesting a fix for APAR IT29262
 
IBM WepSphere MQ V7.5
Contact IBM Support requesting a fix for APAR IT29262
 
IBM MQ and IBM MQ Appliance V8
 
IBM MQ V9.0LTS
IBM MQ and IBM MQ Appliance V9.1 LTS
 
IBM MQ and IBM MQ Appliance V9.1 CD
Upgrade to IBM MQ 9.1.3

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

30 October 2019: Original version published
9 December 2019 : Inclusion of IBM MQ Appliance

*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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Document Information

Modified date:
09 December 2019

UID

ibm11073490

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