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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0308
 Multiple vulnerabilities in IBM Java Runtime affect IBM ILOG CPLEX Optimi
            zation Studio and IBM ILOG CPLEX Enterprise Server
                              5 February 2016

===========================================================================

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

Product:           IBM ILOG CPLEX Enterprise Server
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
                   Apple iOS
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Access Privileged Data          -- Remote/Unauthenticated
                   Modify Arbitrary Files          -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Provide Misleading Information  -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-0494 CVE-2016-0483 CVE-2016-0466
                   CVE-2016-0448 CVE-2016-0402 CVE-2015-8540
                   CVE-2015-8472 CVE-2015-8126 CVE-2015-7981
                   CVE-2015-7575 CVE-2015-5041 

Reference:         ASB-2016.0004

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21975929

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Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect IBM
ILOG CPLEX Optimization Studio and IBM ILOG CPLEX Enterprise Server

Security Bulletin

Document information

More support for:

IBM ILOG CPLEX Optimization Studio

Software version:

12.3, 12.4, 12.4.0.1, 12.5, 12.5.0.1, 12.5.1, 12.6, 12.6.0.1, 12.6.1, 12.6.2,
12.6.3

Operating system(s):

AIX, HP-UX, Linux, Solaris, Windows, iOS

Software edition:

All Editions

Reference #:

1975929

Modified date:

2016-02-04

Summary

There are multiple vulnerabilities in IBM Runtime Environment Java Technology
Edition, Version 6 and Version 7 that are used by IBM ILOG CPLEX Optimization
Studio and IBM ILOG CPLEX Enterprise Server. These issues were disclosed as
part of the IBM Java SDK updates in January 2016 and includes the
vulnerability commonly referred to as SLOTH.

Vulnerability Details

CVE IDs:

CVE-2016-0494 CVE-2016-0483 CVE-2015-8126 CVE-2015-8472 CVE-2016-0466
CVE-2016-0402 CVE-2015-7575 CVE-2016-0448 CVE-2015-8540 CVE-2015-7981
CVE-2015-5041

CVEID:

CVE-2016-0494

DESCRIPTION:

An unspecified vulnerability related to the 2D component has complete
confidentiality impact, complete integrity impact, and complete availability
impact.

CVSS Base Score: 10

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109944

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVEID:

CVE-2016-0483

DESCRIPTION:

An unspecified vulnerability related to the AWT component has complete
confidentiality impact, complete integrity impact, and complete availability
impact.

CVSS Base Score: 10

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109945

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:C/I:C/A:C)

CVEID:

CVE-2015-8126

DESCRIPTION:

libpng is vulnerable to a buffer overflow, caused by improper bounds checking
by the png_set_PLTE() and png_get_PLTE() functions. By persuading a victim to
open a specially-crafted PNG file, a remote attacker could overflow a buffer
and execute arbitrary code on the system.

CVSS Base Score: 7.8

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/108010

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/UI:U/C:H/I:H/A:H)

CVEID:

CVE-2015-8472

DESCRIPTION:

libpng is vulnerable to a buffer overflow, caused by improper bounds checking
by the png_get_PLTE() and png_set_PLTE() functions. By persuading a victim to
open a specially crafted PNG image, a remote attacker could overflow a buffer
and execute arbitrary code on the system or cause the application to crash.

CVSS Base Score: 6.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109392

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/UI:U/C:L/I:L/A:L)

CVEID:

CVE-2016-0466

DESCRIPTION:

An unspecified vulnerability related to the JAXP component could allow a
remote attacker to cause a denial of service.

CVSS Base Score: 5

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109948

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVEID:

CVE-2016-0402

DESCRIPTION:

An unspecified vulnerability related to the Networking component has no
confidentiality impact, partial integrity impact, and no availability impact.

CVSS Base Score: 5

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109947

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:N)

CVEID:

CVE-2015-7575

DESCRIPTION:

The TLS protocol could allow weaker than expected security caused by a
collision attack when using the MD5 hash function for signing a
ServerKeyExchange message during a TLS handshake. An attacker could exploit
this vulnerability using man-in-the-middle techniques to impersonate a TLS
server and obtain credentials. This vulnerability is commonly referred to as
SLOTH.

CVSS Base Score: 7.1

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109415

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/UI:U/C:H/I:L/A:N)

CVEID:

CVE-2016-0448

DESCRIPTION:

An unspecified vulnerability related to the JMX component could allow a
remote attacker to obtain sensitive information.

CVSS Base Score: 4

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109949

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVEID:

CVE-2015-8540

DESCRIPTION:

libpng is vulnerable to a buffer overflow, caused by a read underflow in
png_check_keyword in pngwutil.c. 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/109219

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-2015-7981

DESCRIPTION:

libpng could allow a remote attacker to obtain sensitive information, caused
by an out-of-bounds read in the png_convert_to_rfc1123 function. An attacker
could exploit this vulnerability to obtain sensitive information.

CVSS Base Score: 5.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/107740

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:

CVE-2015-5041

DESCRIPTION:

A flaw in the IBM J9 JVM allows code to invoke non-public interface methods
under certain circumstances. Untrusted code could potentially exploit this.
This could lead to sensitive data being exposed to an attacker, or the
attacker being able to inject bad data.

CVSS Base Score: 4.8

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/106719

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:L/A:N)

Affected Products and Versions

IBM CPLEX Optimization Studio (COS) v12.6.3 and earlier

IBM CPLEX Enterprise Server (CES) v12.6.3 and earlier


Principal Product and Version(s)    Affected Supporting Product and Version
COS / CES from v12.3 to v12.5.1     IBM JRE Version 6 Service Refresh 16 Fix Pack 20
COS / CES from v12.6 to v12.6.3     IBM JRE Version 7 Service Refresh 9 Fix Pack 30

Remediation/Fixes

The recommended solution is to download and install the appropriate version
of IBM JRE as soon as practicable.

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

Close any open programs that you may have running;

Rename the initial directory of the IBM JRE (for example: with a .old at the
end),

Download and install the appropriate IBM JRE version.

Here are the detailed instructions

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

Workarounds and Mitigations

For CVE-2015-7575:

Users of Java 7 and later can address the issue by updating the
/jre/lib/security/java.security file as follows (both steps are required):

 Add MD5 to the jdk.certpath.disabledAlgorithms property - e.g.
jdk.certpath.disabledAlgorithms=MD2, RSA keySize < 1024,

MD5

 Add MD5withRSA to the jdk.tls.disabledAlgorithms property - e.g.
jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768,

MD5withRSA

Java 6 requires code changes in the JSSE component in addition to the
java.security file modifications, so upgrading the JRE is the only solution.

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References

Complete CVSS v2 Guide

On-line Calculator v2

Complete CVSS v3 Guide

On-line Calculator v3

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Change History

4 February 2016: 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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