Security Bulletin: Mobilefirst is affected by a log4j vulnerability (CVE-2021-4104)

Summary

A vulnerability in the Apache Log4j open source library has been reported in CVE-2021-4104. The version of log4j bundled within MFP 8.0 is 1.x and hence impacted by vulnerability CVE-2021-4104.

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

There is a vulnerability in the Apache Log4j open source library that has been reported in CVE-2021-4104. The version of log4j bundled within MFP 8.0 is 1.x and hence impacted by vulnerability CVE-2021-4104.

Impact of this vulnerability on the different components are as follows:

1. The version of log4j bundled within MobileFirst Platform Foundation (MFP) 8.0 is 1.x. Any log4j usage in MFP is internal only.

2. For Java adapters usage, follow the set of instructions as mitigation strategy detailed in the workaround/mitigation section.

To fix this vulnerability, MobileFirst is remediating the usage of log4j version which is impacted by this vulnerability as per CISO recommendation.

Remediation of log4j vulnerability is completed and ifix build 8.0.0.0-MFPF-IF202203081427 build is published here http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FOther+software%2FI[…]atform+Foundation&fixids=8.0.0.0-MFPF-IF202203081427&source=SAR

Workarounds and Mitigations

Workarounds and Mitigations

Note on Java adapters usage :

If Java adapters include log4j 1.x libraries or 3rd party frameworks that include log4j1.x libraries, upgrade the latest log4j2 versions which is not impacted by this vulnerability immediately and redeploy the Java adapters. If you are using a vulnerable version of log4j1.x , use the mitigation strategy described in the <https://access.redhat.com/security/cve/CVE-2021-4104.&gt;