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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.0879
IBM Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect
    IBM ILOG CPLEX Optimization Studio and IBM CPLEX Enterprise Server
              (CVE-2018-1890, CVE-2018-12547, CVE-2019-2426)
                               19 March 2019

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

Product:           IBM ILOG CPLEX Optimization Studio
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
                   Mac OS
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Increased Privileges            -- Existing Account      
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-2426 CVE-2018-12547 CVE-2018-1890

Reference:         ESB-2019.0857
                   ESB-2019.0788
                   ESB-2019.0313
                   ESB-2019.0263

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10875674

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Multiple vulnerabilities in IBM Java Runtime affect IBM ILOG CPLEX Optimization
Studio and IBM CPLEX Enterprise Server (CVE-2018-1890, CVE-2018-12547,
CVE-2019-2426)

Product:             IBM ILOG CPLEX Optimization Studio

Software version:    12.9, 12.8, 12.7.1, 12.7, 12.6.3.1, 12.6.3, 12.6.2,
                     12.6.1, 12.6.0.1, 12.6, 12.5.1, 12.5.0.1, 12.5

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

Software edition:    All Editions

Reference #:         0875674

Security Bulletin

Summary

There are multiple vulnerabilities in IBM Runtime Environment Java Versions 7 &
8 used by IBM CPLEX Optimization Studio and IBM CPLEX Enterprise Server. IBM
CPLEX Optimization Studio and IBM CPLEX Enterprise Server have addressed the
applicable CVEs.

Vulnerability Details

If you run your own Java code using the IBM Java Runtime delivered with this
product, you should evaluate your code to determine whether additional Java
vulnerabilities are applicable to your code. For a complete list of
vulnerabilities, refer to the "IBM Java SDK Security Bulletin", located in the
References section for more information.

CVEID: CVE-2018-1890
DESCRIPTION: IBM SDK, Java Technology Edition Version 8 on the AIX platform
uses absolute RPATHs which may facilitate code injection and privilege
elevation by local users.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
152081 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L)

CVEID: CVE-2018-12547
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 the current score
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)

CVEID: CVE-2019-2426
DESCRIPTION: An unspecified vulnerability in Oracle Java SE related to the Java
SE Networking component could allow an unauthenticated attacker to obtain
sensitive information resulting in a low confidentiality impact using unknown
attack vectors.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
155744 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

IBM CPLEX Optimization Studio and IBM CPLEX Enterprise Server 12.9 and earlier
releases

IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 35 and
earlier releases
IBM SDK, Java Technology Edition, Version 8 Service Refresh 5 Fix Pack 27and
earlier releases

Note 1 : CVE-2018-12547 do not apply to IBM SDK, Java Technology Edition on
Solaris, HP-UX and macOS.
Note 2 : CVE-2018-1890 only applies to IBM SDK, Java Technology Edition on AIX.

Remediation/Fixes

The recommended solution is to download and install the appropriate version of
IBM JRE as soon as practicable.
Please note that Java 6 is no longer supported anymore . IBM recommends
upgrading to COS 12.9 and subsequent releases.

Before installing a newer version of IBM JRE, please ensure that you:

  o Close any open programs that you may have running;
  o Rename the initial directory of the IBM JRE (for example: with a .old at
    the end),
  o Download and install the appropriate IBM JRE version.


IBM ILOG CPLEX Optimization Studio and IBM ILOG CPLEX Enterprise Server
- From v12.5: IBM JRE Version 7 Service Refresh 10 Fix Pack 40 and subsequent
releases
- From v12.7: IBM JRE Version 8 Service Refresh 5 Fix Pack 30 and subsequent
releases

You must verify that applying this fix does not cause any compatibility issues.
Here are the detailed instructions for updating IBM JRE.

For HP-UX and Solaris, IBM recommends upgrading to a fixed, supported version/
release/platform of the product.

Workarounds and Mitigations

None

Reference

Complete CVSS v3 Guide
On-line Calculator v3

IBM Java SDK Security Bulletin

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

15 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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