CVE-2021-44228 PoC — Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints

Source

Associated Vulnerability

Description

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

Readme

# log4j-scanner
Log4j 2 (CVE-2021-44228) vulnerability scanner for Windows OS.

## Example Usage

![Terminal output from running .\log4j-scanner.exe in a terminal](https://i.imgur.com/VmlD9y8.png)

## 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.

File Snapshot

 [4.0K]  /data/pocs/efd497f975e0f187a44509832e218d6f232a3e5b
├── [ 279]  go.mod
├── [ 855]  go.sum
├── [ 300]  log4j.go
├── [1003]  README.md
└── [4.0K]  scanner
    └── [ 961]  scanner.go

1 directory, 5 files

Remarks