Version 5.0.5

IMPROVEMENTS

This version patches the vulnerability mentioned below. Unlike the Log4j vulnerabilities fixed in 5.0.0, 5.0.2 and 5.0.3 upgrades which had severities of high or critical, this vulnerability has been assigned a severity of moderate severity. We still suggest that you upgrade at your earliest convenience. 

Important: Security Vulnerability CVE-2021-44832

Summary: Apache Log4j2 vulnerable to RCE via JDBC Appender when attacker controls configuration.

Details

Apache Log4j2 versions 2.0-beta7 through 2.17.0 (excluding security fix releases 2.3.2 and 2.12.4) are vulnerable to a remote code execution (RCE) attack where an attacker with permission to modify the logging configuration file can construct a malicious configuration using a JDBC Appender with a data source referencing a JNDI URI which can execute remote code. This issue is fixed by limiting JNDI data source names to the java protocol in Log4j2 versions 2.17.1, 2.12.4, and 2.3.2.