Security Bulletin: Vulnerability in Apache Log4j (CVE-2021-4104) affects InfoSphere Data Replication

Summary

There is a vulnerability in the version of Log4j that was included in InfoSphere Data Replication.

Vulnerability Details

CVEID:CVE-2021-4104
**DESCRIPTION:**Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the deserialization of untrusted data when the attacker has write access to the Log4j configuration. If the deployed application is configured to use JMSAppender, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215048 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

Update to the latest product fix pack found here:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%3FInformation%20Management&product=ibm/Information+Management/IBM+InfoSphere+Data+Replication&release=11.4&platform=All&function=all&source=fc

[https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EInformation%20Management&product=ibm/Information+Management/IBM+InfoSphere+Data+Replication&release=11.3.3.3&platform=All&function=all](<https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%7EInformation%20Management&product=ibm/Information+Management/IBM+InfoSphere+Data+Replication&release=11.3.3.3&platform=All&function=all>)

Note to Apacha Kafka target users; the remediation removes use of Log4j from the product. Due to the way Apache Kafka environments integrate with various clients, it is strongly recommended to perform extensive testing of the updated product to ensure that the expected logging functions are not impacted.

Workarounds and Mitigations

As a data movement product, InfoSphere Data Replication supports many different sources and targets. A full listing of this can be found in Knowledge Center here:

<https://www.ibm.com/docs/en/idr/11.4.0?topic=requirements-supported-source-targets&gt;

A mitigating factor is that while Log4j is bundled with all installations of supported Linux/UNIX/Windows (LUW) sources and targets, it is only used in the case of the Apache Kafka target.

There are no end user workarounds. It is recommended to update to the latest fix pack.