Security Bulletin
Summary
Apache Log4J is used by IBM App Connect Enterprise Certified Container (ACEcc) for logging when generating a bar file that contains a JDBC connector and when running a Designer flow that contains a JDBC connector. IBM ACEcc Designer Authoring operands and Integration Server operands that use the JDBC connector may be vulnerable to remote code execution due to Apache Log4j (CVE-2021-45046) and denial of service due to Apache Log4j (CVE-2021-45105). The fix includes includes Apache Log4j 2.17.0.
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
| Affected Product(s) | Version(s) |
| App Connect Enterprise Certified Container | 1.1-eus with Operator |
| App Connect Enterprise Certified Container | 1.4 with Operator |
| App Connect Enterprise Certified Container | 1.5 with Operator |
| App Connect Enterprise Certified Container | 2.0 with Operator |
| App Connect Enterprise Certified Container | 2.1 with Operator |
| App Connect Enterprise Certified Container | 3.0 with Operator |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading the operator and any DesignerAuthoring and IntegrationServer operands.
App Connect Enterprise Certified Container 1.4, 1.5, 2.0, 2.1 and 3.0 (Continuous Delivery)
Upgrade to App Connect Enterprise Certified Container Operator version 3.1.0 or higher, and ensure that all DesignerAuthoring and IntegrationServer components are at 12.0.3.0-r1 or higher. Documentation on the upgrade process is available at https://www.ibm.com/docs/en/app-connect/containers_cd?topic=releases-upgrading-operator
Alternatively you can update the operator version to 3.0.0 or higher, then apply a set of iFix images for the DesignerAuthoring and IntegrationServer operands. Instructions on upgrading the Operator and applying the iFix images for the Continuous Delivery release are available at https://www.ibm.com/support/pages/node/6540244
App Connect Enterprise Certified Container 1.1 EUS (Extended Update Support)
Upgrade to App Connect Enterprise Certified Container Operator version 1.1.5 EUS or higher, and ensure that all DesignerAuthoring and IntegrationServer components are at 11.0.0.15-r1-eus or higher. Documentation on the upgrade process is available at https://www.ibm.com/docs/en/app-connect/containers_eus?topic=releases-upgrading-operator
Note: For other versions prior to 1.4 IBM strongly recommends upgrading to a supported level and following the instructions above for the Continuous Delivery versions
Workarounds and Mitigations
None
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References
Acknowledgement
Change History
12 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:
31 January 2022
Initial Publish date:
12 January 2022
UID
ibm16541164