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Log4Shell (CVE-2021-44228) is a zero-day vulnerability reported in November 2021 in Log4j, a popular Java logging framework, involving arbitrary code execution. [2] [3] The vulnerability had existed unnoticed since 2013 and was privately disclosed to the Apache Software Foundation, of which Log4j is a project, by Chen Zhaojun of Alibaba Cloud's security team on 24 November 2021.
A zero-day vulnerability involving remote code execution in Log4j 2, given the descriptor "Log4Shell" (CVE-2021-44228), was found and reported to Apache by Alibaba on November 24, 2021, and published in a tweet on December 9, 2021. [12] Affected services include Cloudflare, iCloud, Minecraft: Java Edition, [42] Steam, Tencent QQ, and Twitter.
This time, the threat is called Log4Shell, a serious vulnerability in Apache’s widely used Log4j logging library tool. ... with more being discovered every day.
The danger of Log4j. The Log4j vulnerability is dangerous for two reasons: how widely used the software is, and how attackers can take advantage of the flaw.
November and December: On November 24, Chen Zhaojun of Alibaba's Cloud Security Team reported a zero-day vulnerability (later dubbed Log4Shell) involving the use of arbitrary code execution in the ubiquitous Java logging framework software Log4j.
Zero-day vulnerabilities are often classified as alive—meaning that there is no public knowledge of the vulnerability—and dead—the vulnerability has been disclosed, but not patched. If the software's maintainers are actively searching for vulnerabilities, it is a living vulnerability; such vulnerabilities in unmaintained software are ...
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Mayorkas said Sunday that more than 1 million drones are registered in the U.S., that there are thousands of recreational and commercial drones flown every day − and that a 2023 FAA rule allowed ...