Security Bulletin: IBM OpenPages for Cloud Pak for Data is vulnerable to denial of service and arbitrary code execution due to Apache Log4j (CVE-2021-45105 and CVE-2021-45046)

Summary

Multiple vulnerabilities in the Apache Log4j ( CVE-2021-45105 and CVE-2021-45046) open source library used by IBM OpenPages for IBM Cloud Pak for Data’s logging framework. The fix includes Apache Log4j 12.17.1.

Vulnerability Details

CVEID:CVE-2021-45105
**DESCRIPTION:**Apache Log4j is vulnerable to a denial of service, caused by the failure to protect from uncontrolled recursion from self-referential lookups. A remote attacker with control over Thread Context Map (MDC) input data could craft malicious input data that contains a recursive lookup to cause a StackOverflowError that will terminate the process. Note: The vulnerability is also called LOG4J2-3230.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215647 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-45046
**DESCRIPTION:**Apache Log4j could result in remote code execution, caused by an incomplete fix of CVE-2021-44228 in certain non-default configurations. When the logging configuration uses a non-default Pattern Layout with a Context Lookup, an attacker with control over Thread Context Map (MDC) input data can craft malicious input data using a JNDI Lookup pattern to leak sensitive information and remote code execution in some environments and local code execution in all environments.
CVSS Base score: 9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215195 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)

Affected Products and Versions

IBM OpenPages for IBM Cloud Pak for Data 8.204.0 and 8.204.1

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by upgrading.

If IBM OpenPages for IBM Cloud Pak for Data 8.204.0 or 8.204.1 is installed, execute these steps to upgrade.

1. IBM Cloud Pak for Data **Refresh 5 of Version 4.0 or later **

2. IBM OpenPages for IBM Cloud Pak for Data **8.204.2 or later **

Upgrade installation instructions for the above steps are provided at the URL listed below:

<https://www.ibm.com/docs/en/cloud-paks/cp-data/4.0?topic=openpages-upgrading&gt;

Workarounds and Mitigations

None