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Security Bulletin: IBM MQ can cause a Denial of Service attack to connecting MQTT clients (CVE-2018-1684)

Security Bulletin


Summary

A problem within the IBM MQ MQTT Service logic could cause a denial of service attack to be executed against MQTT clients attempting to connect to the queue manager.

Vulnerability Details

CVEID: CVE-2018-1684
DESCRIPTION: IBM WebSphere MQ is vulnerable to a error with MQTT topic string publishing that can cause a denial of service attack.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/145456 for the current score
CVSS Environmental Score*: Undefined
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

IBM MQ V8

IBM MQ V8 versions 8.0.0.0 - 8.0.0.10

IBM MQ V9 LTS

IBM MQ V9 LTS versions 9.0.0.0 - 9.0.0.5

IBM MQ V9 CD

IBM MQ V9 CD versions 9.0.1 - 9.0.5

IBM MQ V9.1 LTS

IBM MQ V9.1 LTS versions 9.1.0.0

Remediation/Fixes

IBM MQ V8

Apply iFix IT25490

IBM MQ V9 LTS

Apply iFix IT25490

IBM MQ V9 CD

Upgrade to IBM MQ V9.1.0 and apply iFix IT25490

IBM MQ V9.1 LTS

Apply iFix IT25490

Workarounds and Mitigations

None.

Get Notified about Future Security Bulletins

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

1st November 2018: Initial version created

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Document information

More support for: IBM MQ

Software 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, 9.0.0.0, 9.0.0.1, 9.0.0.2, 9.0.0.3, 9.0.0.4, 9.0.0.5, 9.0.1, 9.0.2, 9.0.3, 9.0.4, 9.0.5, 9.1.0.0

Operating system(s): AIX, Linux, Windows

Reference #: 0734297

Modified date: 07 November 2018