Security Bulletin
Summary
Apache Log4j library (CVE-2021-45105, CVE-2021-45046) is used to provide logging functionality for IBM Informix Dynamic Server in Cloud Pak for Data (CP4D). The fix includes Apache Log4j 2.17.1.
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
| Affected Product(s) | Version(s) |
| IBM Informix Dynamic Server on Cloud Pak for Data (CP4D) | 4.0.0 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by executing these manual steps.
- Upgrade your IBM Informix Dynamic Server 4.0.0 deployments to 4.0.2
- Install the Informix operator version 4.0.2 (included in the CASE ibm-informix-operator-bundle-4.0.3.tgz)
- Navigate to the official documentation for the Informix CP4D service (https://www.ibm.com/docs/en/cloud-paks/cp-data/4.0?topic=services-informix) and follow the steps in the “Upgrading Informix” to update any deployed Informix custom resource from 4.0.0 to 4.0.2
The Informix operator enables you to create Informix instances inside Cloud Pak for Data. The affected version of Log4j was used in one of micro-services deployed in the cluster when you deploy an Informix database instance within CP4D.
Workarounds and Mitigations
None
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References
Change History
01 Apr 2022: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
01 April 2022
Initial Publish date:
01 April 2022
UID
ibm16568843