Security Bulletin: Vulnerability in Apache log4j affects WebSphere Service Registry and Repository (CVE-2021-4104)

Summary

There is a vulnerability in the Apache log4j library shipped with WebSphere Service Registry and Repository. This vulnerability also affects IBM WebSphere Application Server which is shipped with WebSphere Service Registry and Repository. For both products this vulnerability has been addressed by removing the log4j library.

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

For all versions of WebSphere Service Registry and Repository:

• Upgrade to WebSphere Service Registry and Repository V8.5.6.3

For IBM WebSphere Application Server consult the following bulletin:

• Security Bulletin: Multiple vulnerabilities in Apache log4j affect the IBM WebSphere Application Server and IBM WebSphere Application Server Liberty (CVE-2021-4104, CVE-2021-45046)

Workarounds and Mitigations

None