Security Bulletin: IBM MQ is vulnerable to a denial of service attack due to an error within the Data Conversion logic. (CVE-2020-4310)

Security Bulletin

Summary

An issue was found within the data conversion logic that could cause a SIGSEGV and denial of service within an MQ channel process.

Vulnerability Details

CVEID: CVE-2020-4310
DESCRIPTION: IBM MQ and MQ Appliance is vulnerable to a denial of service attack due to an error within the Data Conversion logic.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/177081 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	9.1 LTS
IBM MQ	9.0 LTS
IBM MQ	8.0
IBM MQ	9.1 CD
IBM WebSphere MQ	7.1
IBM WebSphere MQ	7.5

Remediation/Fixes

IBM WebSphere MQ V7.1
Contact IBM Support requesting a fix for APAR IT30605

IBM WepSphere MQ V7.5
Contact IBM Support requesting a fix for APAR IT30605

IBM MQ V8
Apply FixPack 8.0.0.15

IBM MQ V9 LTS
Apply FixPack 9.0.0.10

IBM MQ V9.1 LTS
Apply FixPack 9.1.0.5

IBM MQ aV9.1 CD
Apply FixPack 9.1.5

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

20 June 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 is vulnerable to a denial of service attack due to an error within the Data Conversion logic. (CVE-2020-4310)