Security Bulletin: IBM Operational Decision Manager is vulnerable to denial of service and arbitrary code execution due to Apache Log4j (CVE-2021-45105 and CVE-2021-45046) .

Summary

The Rule Designer client shipped with IBM Operational Decision Manager includes Apache Log4j (CVE-2021-45105 and CVE-2021-45046) which contains vulnerable code. The fix removes Apache Log4j.

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

Remediation/Fixes

Based on current information and analysis, Apache Log4j has been identified as included in the Rule Designer client and not used in the product. Out of an abundance of caution, IBM strongly recommends applying the interim fix to remove Apache Log4j.

For version 8.10.4, install the interim fix 8.10.4.0-ODM_DS-IF011 or more recent iFix version, installer found in Fix Central here

For version 8.10.5, update to 8.10.5.1 and install interim fix.

For version 8.10.5.1, install the interim fix 8.10.5.1-ODM_DS-IF010 or more recent iFix version, installer found in Fix Central here

For version 8.11, install the interim fix 8.11.0.0-ODM_DS-IF002 or more recent iFix version, installer found in Fix Central here

Workarounds and Mitigations

For customers using the IBM Operational Decision Manager ruledesigner client application, IBM recommends addressing the vulnerability now by applying the fix to remove log4j.