Security Bulletin
Summary
Apache Log4j open source library used by IBM® Db2® On Openshift and IBM® Db2® and Db2 Warehouse® on Cloud Pak for Data are affected by multiple vulnerabilities (CVE-2021-45105 and CVE-2021-45046). This library is used by the Db2 Federation and Db2 Graph feature as part of its logging infrastructure. The fix includes includes Apache Log4j v2.17.0.
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
All platforms of the following IBM® Db2® On Openshift fix pack releases and IBM® Db2® and Db2 Warehouse® on Cloud Pak for Data refresh levels are affected:
| Release | Version |
| IBM® Db2® On Openshift |
v11.5.5.0 - v11.5.5.0-cn4 |
| IBM® Db2® and Db2 Warehouse® on Cloud Pak for Data |
v3.5 through refresh 9 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading to the latest IBM Db2 On Openshift or the IBM Db2 and Db2 Warehouse on Cloud Pak for Data refresh release containing the fix for this issue. These builds are available based on the most recent fixpack level of the V11.5.7 release and the Cloud Pak for Data v3.5 refresh 9, 4.0 refresh 4 release. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.
Please note: If the affected release is any refresh level of Cloud Pak for Data 3.5, it is strongly recommended to upgrade to Cloud Pak for Data 4.0, then apply the latest refresh release
| Product | Fixed in Fix Pack | Instructions |
| IBM® Db2® On Openshift |
v11.5.5.1-cn4 v11.5.7.0-cn1 |
https://www.ibm.com/docs/en/db2/11.5?topic=1156-upgrading-updating |
| IBM® Db2® and Db2 Warehouse® on Cloud Pak for Data |
v3.5 refresh 10 v4.0 refresh 5 |
https://www.ibm.com/docs/en/cloud-paks/cp-data/4.0?topic=upgrading |
Workarounds and Mitigations
None
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References
Acknowledgement
Change History
26 Jan 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:
26 January 2022
UID
ibm16551118