This post provides resources to help you understand the vulnerability and how to mitigate it. While we had initially given it the name "Log4Shell", the vulnerability has now been published as CVE-2021-44228 on NVD. The 0-day was tweeted along with a POC posted on The impact of this vulnerability is quite severe. Given how ubiquitous this library is, the severity of the exploit (full server control), and how easy it is to exploit, Popular Java logging library log4j (version 2), called Log4Shell, was discovered that results in Remote Code Execution (RCE) simply by On Thursday, December 9th a 0-day exploit in the Originally Posted December 9th & Last Updated August 1st, 3:30pm PDTįixing Log4Shell? Claim a free vulnerability scan on our dedicated security platform and generate a detailed report in minutes. Log4Shell: RCE 0-day exploit found in log4j, a popular Java logging package How to build an Open Source Business in 2021 (Part 1).How Data Breaches happen and why Secure by Default software is the future.Why your Content Security Policy isn't as secure as you think.Log4Shell: RCE 0-day exploit found in log4j, a popular Java logging package.Understanding Log4Shell via Exploitation and Live Patching (CVE-2021-44228 + CVE-2021-45046).How to Discuss and Fix Vulnerabilities in Your Open Source Library.Log4Shell Update: Severity Upgraded 3.7 to 9.0 for Second log4j Vulnerability (CVE-2021-45046).How to Automatically Mitigate Log4Shell via a Live Patch (CVE-2021-44228 + CVE-2021-45046).
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