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AUSCERT External Security Bulletin Redistribution
Security Bulletin: WebSphere MQ Internet Pass-Thru is
affected by a vulnerability in IBM Java Runtime
10 September 2019
AusCERT Security Bulletin Summary
Product: IBM WebSphere MQ
Operating System: AIX
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2018-12547
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Security Bulletin: WebSphere MQ Internet Pass-Thru is affected by a
vulnerability in IBM Java Runtime
More support for:
AIX; Linux; Windows
WebSphere MQ Internet Pass-Thru has addressed the following vulnerability in
IBM(R) Runtime Environment Java(TM) Version 188.8.131.52. These issues were disclosed
as part of the IBM Java SDK updates in January 2019.
If you run your own Java code using the IBM Java Runtime delivered with this
product, you should evaluate your code to determine whether the complete list
of vulnerabilities are applicable to your code. For a complete list of
vulnerabilities please refer to the link for "IBM Java SDK Security Bulletin"
located in the "References" section for more information.
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a buffer overflow, caused by
improper bounds checking by the jio_snprintf() and jio_vsnprintf() functions.
By sending an overly long argument, a remote attacker could overflow a buffer
and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157512 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 35 and
earlier releases provided by WebSphere MQIPT 2.1 on Windows, AIX and Linux.
These vulnerabilities are fixed in IBM Java Version 7.0 Service Refresh 10 Fix
Pack 40 on Windows, AIX and Linux. A JRE update to this level of Java for MQIPT
184.108.40.206 is available to download from the MS81: WebSphere MQ Internet Pass-Thru
SupportPac page, via the Download package link. The JRE update files are named
ms81_jre_platform_70sr10fp40, where platform is the operating system and
architecture where MQIPT is running.
Users can follow the instructions contained in Instructions for manually
updating the JRE within an MQIPT V2.1 Installation.
Workarounds and Mitigations
Get Notified about Future Security Bulletins
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alerts like this.
Complete CVSS v3 Guide
On-line Calculator v3
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
IBM Java SDK Security Bulletin
*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.
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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