Security Bulletin
Summary
IBM PowerVM Novalink, which consumes Apache Log4j, is subject to CVE-2021-44832, which allow a remote attacker with permission to modify the logging configuration file to execute arbitrary code on the system. By constructing a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI , an attacker could exploit this vulnerability to execute remote code.. IBM strongly recommends addressing the vulnerability now by applying the fix below which provides upgrade to Apache Log4j v2.17.1.
Vulnerability Details
CVEID: CVE-2021-44832
DESCRIPTION: Apache Log4j could allow a remote attacker with permission to modify the logging configuration file to execute arbitrary code on the system. By constructing a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI , an attacker could exploit this vulnerability to execute remote code.
CVSS Base score: 6.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216189 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM PowerVM NovaLink | 1.0.0.16 |
| IBM PowerVM NovaLink | 2.0.0.0 |
| IBM PowerVM NovaLink | 2.0.1 |
| IBM PowerVM NovaLink | 2.0.2 |
| IBM PowerVM NovaLink | 2.0.2.1 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading based on the table below.
| Product | Version | Remediation |
| IBM PowerVM NovaLink | 1.0.0.16 | Update to pvm-novalink 1.0.0.16-220104 |
| IBM PowerVM NovaLink | 2.0.0.0 | Update to pvm-novalink 2.0.1-220104 |
| IBM PowerVM NovaLink | 2.0.1 | Update to pvm-novalink 2.0.1-220104 |
| IBM PowerVM NovaLink | 2.0.2 | Update to pvm-novalink 2.0.2.1-220104 |
| IBM PowerVM NovaLink | 2.0.2.1 | Update to pvm-novalink 2.0.2.1-220104 |
Workarounds and Mitigations
None
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References
Change History
11 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:
12 January 2022
Initial Publish date:
11 January 2022
UID
ibm16540228