ESB-2018.2227 - [Linux][IBM i][HP-UX][Solaris][AIX] IBM MQ: Increased privileges - Existing account 2018-08-01

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2227
        Security Bulletin: Invalid user group vulnerability in IBM
                    MQ on Unix platform(CVE-2018-1551)
                               1 August 2018

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM MQ
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Solaris
Impact/Access:     Increased Privileges -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1551  

Original Bulletin: 
   https://www-01.ibm.com/support/docview.wss?uid=ibm10716113

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Security Bulletin: Invalid user group vulnerability in IBM MQ on Unix platform
(CVE-2018-1551)

Document information
More support for: WebSphere MQ
Software version: All Versions

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris

Reference #: 0716113

Modified date: 31 July 2018

Security Bulletin

Summary

IBM MQ could allow users to have more authority than they should have if an MQ
administrator creates an invalid user group name.

Vulnerability Details

CVEID:  CVE-2018-1551
DESCRIPTION:  IBM MQ could allow users to have more authority than they should
have if an MQ administrator creates an invalid user group name.
CVSS Base Score: 3.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
142888 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:L/A:N)

Affected Products and Versions

IBM MQ v8.0.0.2 to 8.0.0.8

IBM MQ 9.0.0.0 to 9.0.0.3

Remediation/Fixes

IBM MQ v8.0.0.2 to 8.0.0.8

Apply fix pack 8.0.0.9 or above

IBM MQ 9.0.0.0 to 9.0.0.3

Apply fix pack 9.0.0.4 or above

Workarounds and Mitigations

None

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

31 July 2018 - original document 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

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.

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