Security Bulletin: CVE-2021-44228 log4j affects MAS Monitor 8.4, 8.5 and 8.6

Summary

A new vulnerability with log4j has been detected. MAS Monitor uses log4j in all releases and interim fixes are now available for our 8.4, 8.5 and 8.6 releases. More details of the vulnerability are available here: https://nvd.nist.gov/vuln/detail/CVE-2021-44228

Vulnerability Details

CVEID:CVE-2021-44228
**DESCRIPTION:**Apache Log4j could allow a remote attacker to execute arbitrary code on the system, caused by the failure to protect against attacker controlled LDAP and other JNDI related endpoints by JNDI features. By sending a specially crafted code string, an attacker could exploit this vulnerability to load arbitrary Java code on the server and take complete control of the system. Note: The vulnerability is also called Log4Shell or LogJam.
CVSS Base score: 10
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/214921 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H)

CVEID:CVE-2021-3737
**DESCRIPTION:**Python is vulnerable to a denial of service, caused by improper handling of HTTP response in the HTTP client code. By persuading a victim to visit a specially-crafted web site, a remote attacker could exploit this vulnerability to cause the client script enter an infinite loop, and results in a denial of service condition.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/213407 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

To receive the interim fix update your Red Hat OpenShift deployments for each of the Monitor API pods to point to the newly published fix image in IBM Cloud Registry.

Steps:

First, disable the Monitor operator by decrementing the number of pods instantiated by the operator deployment from 1 to 0.

Now go each of these 5 deployments: rest-meta, rest-kpi, rest-master, rest-datalake and rest-dscmanager.

Change the image tag from the released version to this image version

For 8.6:

8.6.2-pre.8.6.hotfix

For 8.5:

8.5.7-pre.8.5.hotfix

For 8.4:

8.4.12-pre.8.4.hotfix

After the pods restart the interim fix has been applied

Move to this directory on each pod.

cd /opt/was/liberty/wlp/usr/servers/default/dropins

List the files in the war.

unzip -l *.war

Verify your log4j.jar is version 2.15.0.

Reenable your operator to automatically install/receive future fixpacks as they are released on OLM.

Workarounds and Mitigations

None