Security Bulletin: Apache Log4j vulnerability affects IBM Cloud Pak for Multicloud Management (CVE-2021-44832)

Summary

IBM Cloud Pak for Multicloud Management has applied security fixes for its use of Log4j for CVE-2021-44832. Log4j is used by various microservices either directly or indirectly through dependent open source software for logging messages to files. The fix includes Apache Log4j 2.17.1.

Vulnerability Details

CVEID:CVE-2021-44832
**DESCRIPTION:**Apache Log4j could allow a remote attacker with permission to modify the logging configuration file to execute arbitrary code on the system. By constructing a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI , an attacker could exploit this vulnerability to execute remote code.
CVSS Base score: 6.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216189 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

Upgrade to IBM Cloud Pak for Multicloud Management 2.3 Fix Pack 4 by following the instructions at <https://www.ibm.com/docs/en/cloud-paks/cp-management/2.3.x?topic=installation-upgrade&gt;.

Workarounds and Mitigations

IBM recommends clients should configure their firewalls to block unauthorized outbound connections to mitigate against this and similar vulnerabilities.