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CISA has also published an alert advising immediate mitigation of CVE-2021-44228.Ī huge swath of products, frameworks, and cloud services implement Log4j, which is a popular Java logging library. We expect attacks to continue and increase: Defenders should invoke emergency mitigation processes as quickly as possible. Rapid7 researchers have developed and tested a proof-of-concept exploit that works against the latest Struts2 Showcase (2.5.27) running on Tomcat. Multiple sources have noted both scanning and exploit attempts against this vulnerability.
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CVE-2021-44228 is being broadly and opportunistically exploited in the wild as of December 10, 2021. Successful exploitation of CVE-2021-44228 can allow a remote, unauthenticated attacker to take full control of a vulnerable target system.
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