ESB-2019.0357 - [Win][Linux] IBM i2 Enterprise Insight Analysis: Execute arbitrary code/commands - Existing account 2019-02-07

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0357
   Security Bulletin: IBM i2 Enterprise Insight Analysis. CVE-2018-12539
                              7 February 2019

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

Product:           IBM i2 Enterprise Insight Analysis
Publisher:         IBM
Operating System:  Linux variants
                   Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-12539  

Reference:         ESB-2019.0260
                   ESB-2019.0258

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10738641

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Security Bulletin: IBM i2 Enterprise Insight Analysis. CVE-2018-12539

Document information

More support for: i2 Enterprise Insight Analysis

Software version: 2.1.7

Operating system(s): Linux, Windows

Reference #: 0738641

Modified date: 06 February 2019

Security Bulletin

Summary

IBM i2 Enterprise Insight Analysis is delivered with the IBM Java Runtime. A
vulnerability was discovered in the IBM Java Runtime that can leave the product
vulnerable to attacks allowing arbitrary code to be injected.

Vulnerability Details

CVEID: CVE-2018-12539

DESCRIPTION: Eclipse OpenJ9 could allow a local attacker to gain elevated
privileges on the system, caused by the failure to restrict the use of Java
Attach API to connect to an Eclipse OpenJ9 or IBM JVM on the same machine and
use Attach API operations to only the process owner. An attacker could exploit
this vulnerability to execute untrusted native code and gain elevated
privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
148389 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)


Affected Products and Versions

IBM i2 Enterprise Insight Analysis 2.1.7

Remediation/Fixes

Attach API is enabled by default on Windows, Linux, and AIX JVMs and can be
disabled using the command line option -Dcom.ibm.tools.attach.enable=no

In IBM i2 Enterprise Insight Analysis version 2.1.8 and later, the attach API
is disabled prior to deployment by default. For previous releases, the user can
modify their environments using the steps below to manually disable it.

Workarounds and Mitigations

1. Locate the jvm.options (usually <i2AnalyzeRoot>/deploy/wlp/usr/servers/
opal-server)

2. Open the file using a text editor

3. Add the following line at the top of the file:

- -Dcom.ibm.tools.attach.enable=no

4. Save and close the file

5. In the (<i2AnalyzeRoot>/toolkit/scripts) directory, run the following
command to restart the application server:

setup -t restartLiberty

Reference

Complete CVSS v3 Guide
On-line Calculator v3

http://cve.mitre.org/cgi-bin/cvename.cgi-name=CVE-2018-12539.

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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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