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Security Bulletin: MQ Explorer directory created with owner '555' on Linux x86-64 vulnerability affects IBM MQ (CVE-2016-6089)

Security Bulletin


Summary

IBM MQ including MQ Explorer installed on Linux x86-64 environment. After the completion of installation, all directories under opt/mqm/mqexplorer/eclipse are created with owner "555" (non-existant user) and group mqm. This vulnerability allows a local user to alter the contents of the opt/mqm/mqexplorer/eclipse directory and make the product unusuable.

Vulnerability Details


CVEID: CVE-2016-6089
DESCRIPTION:
 IBM WebSphere MQ could allow a local user to write to a file or delete files in a directory they should not have access to due to improper access control.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/117926 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

IBM MQ v9.0.0.0

IBM MQ v9.0.1

Remediation/Fixes

IBM MQ v9.0.1

Apply IBM MQ v9.0.2

IBM MQ v9.0.0.0

Apply IBM MQ v9.0.0.1

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

31 May 2017: 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.

Document information

More support for: IBM MQ
MQ Explorer / Remote admin

Software version: 9.0.0.1, 9.0.2

Operating system(s): Linux

Software edition: All Editions

Reference #: 2003509

Modified date: 30 May 2017