Security Bulletin: A vulnerability in IBM Java affects IBM Decision Optimization Center (CVE-2020-27221)

Summary

There is a vulnerability in IBM® Java™ versions 7 & 8 used by IBM Decision Optimization Center. IBM Decision Optimization Center has addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2020-27221
**DESCRIPTION:**Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, 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/195353 for the current score.
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

Remediation/Fixes

The recommended solution is to download and install the IBM Java SDK as soon as practicable.
Please note that IBM SDK Java 6 is no longer supported anymore. IBM recommends upgrading to DOC 3.8.0.2, 3.9.1 or subsequent releases.

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

• Close any open programs that you have running;
• Rename the initial directory of the IBM Java SDK (for example: with a .old at the end),
• Download and install IBM Java SDK.

IBM Decision Optimization Center
From v3.8.0.2: IBM SDK, Java Technology Edition, Version 7 Service Refresh 10 Fix Pack 80 and subsequent releases
From v3.9.0.1: IBM SDK, Java Technology Edition, Version 8 Service Refresh 6 Fix Pack 25 and subsequent releases

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

Workarounds and Mitigations

None