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15 MINUTE SECURITY FLASH

Log4Shell

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On Dec. 9, 2021, a zero-day exploit (since dubbed “Log4Shell”) was observed in the wild targeting a critical RCE vulnerability in Log4j, the ubiquitous open source logging tool. (Per NIST, in affected versions, JNDI features used in configuration, log messages, and parameters do not protect against attacker controlled LDAP and other JNDI-related endpoints.) Numerous platforms appear to have been affected–including Apple, Cloudflare, and Twitter–in addition to the raft of popular Java ecosystem products with Log4j embedded in their software supply chains, such as Logstash, Apache Kafka, Elasticsearch, and even Minecraft. Listen to this 15-Minute Security Flash with Casey to learn more about this zero-day vulnerability.

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