Security Bulletin: IBM MQ Appliance is vulnerable to a denial of service attack caused by an authenticated user crafting a malicious message (CVE-2019-4656)

Security Bulletin

Summary

IBM MQ Appliance is vulnerable to a denial of service attack that would allow an authenticated user to craft a malicious message causing a queue manager to incorrectly mark a queue as damaged, requiring a restart to continue processing against the queue.

Vulnerability Details

CVEID: CVE-2019-4656
DESCRIPTION: IBM MQ and IBM MQ Appliance 7.1, 7.5, 8.0, 9.0 LTS, 9.1 LTS, and 9.1 CD are vulnerable to a denial of service attack that would allow an authenticated user to craft a malicious message causing a queue manager to incorrectly mark a queue as damaged, requiring a restart to continue processing against the queue. IBM X-Force ID: 170967.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/170967 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM MQ Appliance	8.0
IBM MQ Appliance	9.1 LTS
IBM MQ Appliance	9.1 CD

Remediation/Fixes

IBM MQ Appliance V8
Apply FixPack 8.0.0.14

IBM MQ Appliance V9.1 LTS
Apply FixPack 9.1.0.4

IBM MQ Appliance V9.1 CD
Upgrade to IBM MQ 9.1.5

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Change History

20 Apr 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

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"ARM Category":[{"code":"a8m0z00000008MzAAI","label":"Security"}],"ARM Case Number":"","Platform":[{"code":"PF004","label":"Appliance"}],"Version":"8.0.0.0;8.0.0.1;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;8.0.0.12;8.0.0.13;9.1;9.1.0.1;9.1.0.2;9.1.0.3;9.1.1;9.1.2;9.1.3;9.1.4","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Tips

Security Bulletin: IBM MQ Appliance is vulnerable to a denial of service attack caused by an authenticated user crafting a malicious message (CVE-2019-4656)