Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect Rational Synergy (CVE-2016-0475 and CVE-2015-7575)

Summary

There are multiple vulnerabilities in IBM® Runtime Environment Java™ Technology Edition, Version 6 Service Refresh 16 Fix Pack 15 and earlier releases that is used by Rational Synergy. 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

CVEID: CVE-2016-0475**
DESCRIPTION:** An unspecified vulnerability related to the Libraries component has partial confidentiality impact, partial integrity impact, and no availability impact.
CVSS Base Score: 5.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109946 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/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 known 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)

Affected Products and Versions

7.2.0.7 iFix001 and earlier releases.

7.2.1.4 ifix01 and earlier releases.

Remediation/Fixes

Product

| VRMF| Remediation/First Fix
—|—|—
Rational Synergy| 7.2.0.x and 7.2.1.x| Replace the JRE used in Rational Synergy.

Steps to download and replace JRE in Rational Synergy:
1. Open the list of Synergy downloads on Fix Central
2. Select the SDK and Readme for Rational Synergy which applied to your release as follows:

Note: The fix will use the following naming convention: <V.R.M.F>-Rational-RATISYNE-JavaSE-SDK-6.0.16.20-<platform> **

Where<V.R.M.F> = release &<platform> = operating system**

o Rational Synergy 7.2.1 (uses 7.2.1.4 release designation)
Example: 7.2.1.4-Rational-RATISYNE-JavaSE-SDK-6.0.16.20-Linux

o Rational Synergy 7.2.0 (uses 7.2.0.7 release designation)
Example: 7.2.0.7-Rational-RATISYNE-JavaSE-SDK-6.0.16.20-Windows

3. Follow the steps in the Install instructions to replace the JRE.

For Rational Synergy 7.1.0.x IBM recommends upgrading to a fixed, supported version/release/platform of the product.

To verify if Synergy has JRE version to address these security vulnerabilities:-
Open a command prompt **
Unix**:-
Go to $CCM_HOME/jre/bin folder
Execute ./java -version
**
Windows**:-
Go to %CCM_HOME%\jre\bin folder
Execute java -version

If in the output version is greater than SR16 FP20 or if it is SR16 FP20, It implies the run area has jre version that addresses these security vulnerabilities.

Workarounds and Mitigations

None