No, Apache Isn’t Vulnerable to the Log4j Vulnerability
Updated December 19, 2021
The Log4j Java library has been in the news recently. The details of vulnerability CVE-2021-44228 have been well documented by others, but to summarize, it allows arbitrary code execution through maliciously crafted messages. These messages cause the Java virtual machine to look up classes from an LDAP server and load them. This is obviously not good, but unless you’re familiar with Java, you might be concerned what is and isn’t vulnerable; this article aims to clarify that.