Security Bulletin: IBM MQ could allow an authenticated user to cause a denial of service due to a memory leak. (CVE-2020-4267)

Security Bulletin

Summary

A memory leak was found within the LDAP Authentication code which could be exploited to cause a denial of service attack.

Vulnerability Details

CVEID: CVE-2020-4267
DESCRIPTION: IBM MQ and MQ Appliance could allow an authenticated user to cause a denial of service due to a memory leak.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/175840 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	9.1 LTS
IBM MQ	9.0 LTS
IBM MQ	8.0
IBM MQ	9.1 CD

Remediation/Fixes

IBM MQ v8

Apply FixPack 8.0.0.15

IBM MQ V9.0 LTS

Apply FixPack 9.0.0.9

IBM MQ V9.1 LTS
Apply FixPack 9.1.0.5

IBM MQ V9.1 CD
Upgrade to version 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

10 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 could allow an authenticated user to cause a denial of service due to a memory leak. (CVE-2020-4267)