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log4j-scanner's Introduction

log4j-scanner

Log4j 2 (CVE-2021-44228) vulnerability scanner for Windows OS.

Example Usage

Terminal output from running .\log4j-scanner.exe in a terminal

Usage

.\log4j-scanner.exe

Terminal is used to output results, deploy this to machines via RMM and Start/Report from PowerShell or CMD Prompt.

Build from source

git clone https://github.com/name/log4j-scanner.git
cd log4j-scanner/
go get github.com/shirou/gopsutil/disk
go build .

How does it work?

After finding each avialable drive on the system this will find all .jar files that belong to 'log4j-core' and expand the jar archive to check if the vulnerable file 'JndiLookup.class' exists, if the file is present the path to the .jar file is reported back to the terminal.

Changes?

I'm still in the early stages of learning GO so feel free to create a pull request with any changes!

Compatibility

Compatible with Windows Server 2012+, Windows 7-10 and Windows Core.

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