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Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.

log4j-scanner is a project derived from other members of the open-source community by CISA to help organizations identify potentially vulnerable web services affected by the log4j vulnerabilities.

🐱‍💻 ✂️ 🤬 CVE-2021-44228 - LOG4J Java exploit - WAF bypass tricks

Apache log4j1

对java、scala等运行于jvm的程序进行实时日志采集、索引和可视化，对系统进行进程级别的监控，对系统内部的操作进行策略性的报警、对分布式的rpc调用进行trace跟踪以便于进行性能分析

A public open sourced tool. Log4J scanner that detects vulnerable Log4J versions (CVE-2021-44228, CVE-2021-45046, etc) on your file-system within any application. It is able to even find Log4J instances that are hidden several layers deep. Works on Linux, Windows, and Mac, and everywhere else Java runs, too! TAG_OS_TOOL, OWNER_KELLY, DC_PUBLIC

Graylog Extended Log Format (GELF) implementation in Java for all major logging frameworks: log4j, log4j2, java.util.logging, logback, JBossAS7 and WildFly 8-12

🎯 LogCaptor captures log entries for unit and integration testing purposes

Log4j-RCE (CVE-2021-44228) Proof of Concept with additional information

sofa-common-tools is a library that provide some utility functions to other SOFA libraries.

Lilith is a Logging- and AccessEvent viewer for Logback, log4j, log4j2 and java.util.logging

一个针对防御 log4j2 CVE-2021-44228 漏洞的 RASP 工具。 A Runtime Application Self-Protection module specifically designed for log4j2 RCE (CVE-2021-44228) defense.

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OWASP Security Logging library for Java

Log4j 2.x plugin for customizable and Logstash-friendly JSON layout.

🌳 Log4j2 TTL ThreadContextMap, Log4j2 extension integrated TransmittableThreadLocal to MDC

Log annotation for logging frameworks

Rollbar for Java and Android

JLine 3 appender for Log4j2, allows extending command line apps using colors and command completion