Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Even if you tried VERY hard to enjoy a quiet weekend, chances are that this plan was interrupted at least once by the new Log4Shell zero-day vulnerability that was disclosed on Friday (December 10, 2021). The new vulnerability was found in the open source Java library log4j-core which is a component of one of the most popular Java logging frameworks, Log4J.

By now, you already know of — and are probably in the midst of remediating — the vulnerability that has come to be known as Log4Shell and identified as CVE-2021-44228. This is the vulnerability which security researchers disclosed on Friday (10 December 2021) for Apache’s Log4j logging framework. In this article, we’ll explore a few key Log4j facts as well as actions you can take to protect yourself and your company.

Last Thursday, a researcher from the Alibaba Cloud Security Team dropped a zero-day remote code execution exploit on Twitter, targeting the extremely popular log4j logging framework for Java (specifically, the 2.x branch called Log4j2). The vulnerability was originally discovered and reported to Apache by the Alibaba cloud security team on November 24th. MITRE assigned CVE-2021-44228 to this vulnerability, which has since been dubbed Log4Shell by security researchers.

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A newly published critical vulnerability in Apache’s widely popular Log4j Java library, CVE-2021-44228 (CVSS score 10) was published over the weekend, causing a lot of concern.