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Updated version to 1.2.0 with fat jar support
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xeraph authored Dec 12, 2021
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![Logpresso Logo](logo.png)

log4j2-scan is single binary command-line tool for CVE-2021-44228 vulnerability scanning.
log4j2-scan is a single binary command-line tool for CVE-2021-44228 vulnerability scanning and mitigation patch. It also supports nested JAR file scanning and patch.

### Download
* [log4j2-scan 1.1.1 (Windows x64)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.1.1/logpresso-log4j2-scan-1.1.1-win64.7z)
* [log4j2-scan 1.1.1 (Linux x64)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.1.1/logpresso-log4j2-scan-1.1.1-linux.tar.gz)
* [log4j2-scan 1.1.1 (Any OS, 5KB)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.1.1/logpresso-log4j2-scan-1.1.1.jar)
* [log4j2-scan 1.2.0 (Windows x64)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.2.0/logpresso-log4j2-scan-1.2.0-win64.7z)
* [log4j2-scan 1.2.0 (Linux x64)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.2.0/logpresso-log4j2-scan-1.2.0-linux.tar.gz)
* [log4j2-scan 1.2.0 (Any OS, 5KB)](https://github.com/logpresso/CVE-2021-44228-Scanner/releases/download/v1.2.0/logpresso-log4j2-scan-1.2.0.jar)

### How to use
Just run log4j2-scan.exe or log4j2-scan with target directory path.
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```
On UNIX (AIX, Solaris, and so on)
```
java -jar logpresso-log4j2-scan-1.1.0.jar [--fix] target_path
java -jar logpresso-log4j2-scan-1.2.0.jar [--fix] target_path
```

If you add `--fix` option, this program will copy vulnerable original JAR file to .bak file, and create new JAR file without `org/apache/logging/log4j/core/lookup/JndiLookup.class` entry. In most environments, JNDI lookup feature will not be used. However, you must use this option at your own risk. It is necessary to shutdown any running JVM process before applying patch. Start affected JVM process after fix.
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