Security Bulletin: IBM MQ and IBM MQ Appliance are vulnerable to a denial of service attack caused by an error within the clustering code. (CVE-2019-4568)

Security Bulletin

Summary

An error within the IBM MQ Clustering code could cause a denial of service attack by preventing cluster channels from starting.

Vulnerability Details

CVEID: CVE-2019-4568
DESCRIPTION: IBM MQ could allow a remote attacker with intimate knowledge of the server to cause a denial of service when receiving data on the channel.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/166629 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 and IBM MQ Appliance	8.0

Remediation/Fixes

IBM WebSphere MQ V7.1
Customers with extended support entitlement may contact IBM Support to obtain an interim fix for APAR IT30117

IBM WepSphere MQ V7.5
Customers with extended support entitlement may contact IBM Support to obtain an interim fix for APAR IT30117

IBM MQ and IBM MQ Appliance V8
Apply fix pack 8.0.0.14 or later

IBM MQ V9 LTS
Apply fix pack 9.0.0.8 or later

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

24 Jan 2020: 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

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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Tips

Security Bulletin: IBM MQ and IBM MQ Appliance are vulnerable to a denial of service attack caused by an error within the clustering code. (CVE-2019-4568)