ESB-2019.0782 - [Linux][HP-UX][Solaris][AIX] IBM MQ: Execute arbitrary code/commands - Existing account 2019-03-12

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0782
IBM Security Bulletin: IBM MQ could allow a local user to inject code that
          could be executed with root privileges. (CVE-2018-1998)
                               12 March 2019

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

Product:           IBM MQ
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1998 CVE-2018-1792 

Reference:         ESB-2019.0675
                   ESB-2019.0429
                   ESB-2019.0335.5
                   ESB-2019.0207

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10870488

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IBM MQ could allow a local user to inject code that could be executed with root
privileges. (CVE-2018-1998)

Product:             IBM MQ

Component:           installer

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, 9.1.1

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

Reference #:         0870488

Security Bulletin

Summary

IBM MQ could allow a local user to inject code that could be executed with root
privileges. This is due to an incomplete fix for CVE-2018-1792.

Vulnerability Details

CVEID: CVE-2018-1998
DESCRIPTION: IBM WebSphere MQ could allow a local user to inject code that
could be executed with root privileges. This is due to an incomplete fix for
CVE-2018-1792.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
154887 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)

Affected Products and Versions

IBM MQ V8
versions 8.0.0.0 - 8.0.0.10

IBM MQ V9 LTS
versions 9.0.0.0 - 9.0.0.5

IBM MQ V9.1 LTS
versions 9.1.0.0 - 9.1.0.1


Remediation/Fixes

IBM MQ V8
Apply FixPack 8.0.0.11

IBM MQ V9 LTS
Apply iFix IT27293 for IBM MQ 9.0.0.5

IBM MQ V9.1 LTS
Apply iFix IT27293 for IBM MQ 9.1.0.1


Workarounds and Mitigations

Do not allow users to log into machines, running IBM MQ Servers, as the mqm
user.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

The vulnerability was reported to IBM by Josh McIver

Change History

1 March 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

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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