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Security Bulletin: IBM MQ is vulnerable to a privilege escalation attack when using multiplexed channels (CVE-2018-1974)

Security Bulletin


Summary

IBM MQ could allow an authenticated attacker to escalate their privileges with channels that have multiplexing enabled.

Vulnerability Details

CVEID: CVE-2018-1974
DESCRIPTION: IBM MQ could allow an authenticated attacker to escalate their privileges when using multiplexed channels.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/153915 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM MQ v8

  • Maintenance levels 8.0.0.0 - 8.0.0.10


IBM MQ v9 LTS

  • Maintenance levels 9.0.0.0 - 9.0.0.5


IBM MQ v9.1 CD

  • Maintenance levels 9.1.0 - 9.1.1


IBM MQ v9.1 LTS

  • Maintenance levels 9.1.0.0 - 9.1.0.1

Remediation/Fixes

IBM MQ v8


IBM MQ v9 LTS


IBM MQ v9.1 CD


IBM MQ v9.1 LTS

Workarounds and Mitigations

Disable multiplexing on channels

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

1 March 2019: Initial version released

*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

Component: server

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, 9.1.0.0, 9.1.0.1, 9.1.1

Operating system(s): Windows

Software edition: all

Reference #: 0792043

Modified date: 08 March 2019