IBM Support

Security Bulletin: IBM MQ clients are vulnerable to a denial of service attack caused by consuming specifically crafted messages (CVE-2019-4261)

Security Bulletin


Summary

An error was found with the IBM MQ client message handling logic that causes a denial of service attack when specifically crafted messages are consumed.

Vulnerability Details

CVEID: CVE-2019-4261
DESCRIPTION: IBM MQ Clients are vulnerable to a denial of service attack caused by specially crafted messages.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/160013 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:L)

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 V8
versions 8.0.0.0 - 8.0.0.11
 
IBM MQ V9.0LTS
versions 9.0.0.0 - 9.0.0.6
IBM MQ V9.1 LTS
versions 9.1.0.0 - 9.1.0.2
 
IBM MQ V9.1 CD
versions 9.1.0 - 9.1.2

Remediation/Fixes

IBM WebSphere MQ V7.1
Contact IBM Support to request a fix for APAR IT25916
 
IBM WepSphere MQ V7.5
Contact IBM Support to request a fix for APAR IT25916
IBM MQ V8
 
IBM MQ V9.0LTS
IBM MQ V9.1 LTS
 
IBM MQ V9.1 CD

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

1st August 2019: Original version published

*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.

Internal Use Only

Advisory: 15956
Product Record: 135150

Document Location

Worldwide

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"client","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF010","label":"HP-UX"},{"code":"PF012","label":"IBM i"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":"8.0.0.0;8.0.0.1;8.0.0.2;8.0.0.3;8.0.0.4;8.0.0.5;8.0.0.6;8.0.0.7;8.0.0.8;8.0.0.9;8.0.0.10;8.0.0.11;9.0.0.0;9.0.0.1;9.0.0.2;9.0.0.3;9.0.0.4;9.0.0.5;9.0.0.6;9.1.0.0;9.1.0.1;9.1.0.2;9.1.1;9.1.2","Edition":"All","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
01 August 2019

UID

ibm10886887

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