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December 14, 2021 - Vulnerability in Apache Log4j Library
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December 14, 2021
Vulnerability in Apache Log4j Library
Information below is a copy of a BASIS Knowledge Base article
The CVE-2021-44228 Log4j2 vulnerability is described by InfoWorld as follows:
The problem revolves around a bug in the Log4j library that can allow an attacker to execute arbitrary code on a system that is using Log4j to write out log messages. This security vulnerability has a broad impact and is something anyone with an application containing Log4j needs to immediately pay attention to.
BBj Vulnerability: Minimal
There is no exposure for BBj revisions 17.13 and above.
A vulnerable version of the log4j library (log4j-api-2.8.1.jar) was distributed with BBj revisions 17.10 through 17.12. However, the “Console Logging” BBj feature that used this library was not enabled by default, and instructions to do so were never published.
Unless you received explicit instructions from BASIS on how to implement this feature in BBj 17.x, it is very unlikely to be a vulnerability in your deployment.
The final revision of the BBj 17.x series, BBj 17.13, did not include this library.
For BBj revisions 17.10, 17.11, and 17.12, upgrade to BBj 17.13 or higher. If you are unable to upgrade, then you can add this property to the /cfg/BBj.properties file to ensure Console Logging via the log4j library is disabled:
For BBj revisions prior to BBj 17.10 or later than BBj 17.12, no action is required.
(V)PRO/5 Vulnerability: None
(V)PRO/5 uses no Java libraries.
Standalone PRO/5 Data Server: None
The standalone PRO/5 Data Server uses no Java libraries.
BASIS License Manager (BLM) Vulnerability: None
The BLM uses no Java libraries
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