Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect IBM ILOG CPLEX Optimization Studio and IBM CPLEX Enterprise Server (CVE-2020-2593, CVE-2020-2583, CVE-2019-4732)

Summary

There are multiple vulnerabilities in IBM® Runtime Environment Java™ Version 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

CVEID:CVE-2020-2593
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Java SE Networking component could allow an unauthenticated attacker to cause low confidentiality impact, low integrity impact, and no availability impact.
CVSS Base score: 4.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/174541 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID:CVE-2020-2583
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Java SE Serialization component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/174531 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID:CVE-2019-4732
**DESCRIPTION:**IBM SDK, Java Technology Edition Version 7.0.0.0 through 7.0.10.55, 7.1.0.0 through 7.1.4.55, and 8.0.0.0 through 8.0.6.0 could allow a local authenticated attacker to execute arbitrary code on the system, caused by DLL search order hijacking vulnerability in Microsoft Windows client. By placing a specially-crafted file in a compromised folder, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 172618.
CVSS Base score: 7.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/172618 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H)

Affected Products and Versions

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.

IBM ILOG CPLEX Optimization Studio and** IBM ILOG CPLEX Enterprise Server**

IBM JRE Version 8 Service Refresh 6 Fix Pack 5 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