Cyber Risks · GreyNoise Blog

Trending: Apache Log4j Vulnerability | Cybersecurity Blog | Grey Noise

Summary: Apache filed a JIRA issue on December 5, 2021 identifying the Log4j flaw later designated CVE-2021-44228, released a patch the next day crediting Chen Zhaojun of Alibaba Cloud Security Team, and weaponized proof-of-concept exploits appeared by December 9. GreyNoise first observed scanning activity on December 9 from 194.48.199[.]78 and 181.214.39[.]2, then saw a 5x increase in hits per sensor between 1200 and 1400 EST on December 10, with exploitation ranging from Minecraft servers to issues potentially affecting Apple iCloud.

What's compelling: GreyNoise compares Log4Shell to ShellShock, which it still observes scanning traffic for since 2014 - a signal that a flaw this deeply embedded in DevOps frameworks, enterprise IT, and vendor products will keep generating exposure long after the patch window closes.

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Topics
Zero-Days & Exploits
Mentions
CVE-2021-44228
Related
CVE-2021-44228: Apache Log4j2 Remote Code Execution Vulnerability Known Exploited Vulnerabilities · Dec 10, 2021