## https://sploitus.com/exploit?id=A6B6F71D-D834-504F-8134-58852894EADF
## Proof of Concept for Exploiting CVE-2024-23897 Vulnerability in Jenkins Versions 2.441 and Earlier
This repository provides a proof-of-concept (PoC) exploit for the CVE-2024-23897 vulnerability affecting Jenkins versions 2.441 and earlier. This vulnerability allows an attacker to read arbitrary files from the Jenkins server's underlying operating system, potentially leading to data exfiltration or further compromise.
### Understanding the Vulnerability
CVE-2024-23897 stems from a flaw in the Jenkins core's handling of certain HTTP requests. Specifically, an attacker can manipulate the `Jenkins.model.Jenkins` class, which controls access to the server's internal resources. This manipulation allows the attacker to bypass security measures and read sensitive files that are normally restricted.
### How the Exploit Works
The exploit provided in this repository leverages the vulnerability to read the `/etc/passwd` file on the target Jenkins server. This file contains information about user accounts and passwords, demonstrating the potential for significant damage.
Here's how the exploit functions:
1. Version Check: First, the script verifies the Jenkins version to ensure the target system is vulnerable.
2. Exploitation: The exploit sends a specially crafted HTTP request to the Jenkins server, exploiting the CVE-2024-23897 vulnerability to bypass security restrictions.
3. File Reading: The script then retrieves the contents of the specified file, in this case, `/etc/passwd`.
Example usage:
python3 CVE-2024-23897.py 172.17.0.2 8080 /etc/passwd
This command would attempt to read the `/etc/passwd` file from a Jenkins server running on `172.17.0.2` at port `8080`.
### Practical Demonstration
We tested this exploit against the 'SecretJenkins' lab environment provided by a Docker labs platform. This environment simulates a vulnerable Jenkins instance, allowing for safe practice and analysis of the exploit's behavior.
### Mitigation
To protect against this vulnerability, it is crucial to update Jenkins to version 2.442 or later. This update includes a patch that addresses the flaw in the Jenkins core, effectively mitigating the risk.
Further Research and Exploitation
While this PoC demonstrates the vulnerability and its potential impact, it is merely a starting point. Further research and exploration could lead to more sophisticated exploits, potentially allowing for:
* Credential Theft: Stealing sensitive credentials like user account passwords, API tokens, or private keys.
* System Compromise: Gaining unauthorized access to the Jenkins server's operating system, enabling further attacks and malicious actions.
* Data Exfiltration: Stealing sensitive data stored on the server, such as source code, customer information, or proprietary data.
### Disclaimer
This repository is intended for educational purposes only. Exploiting vulnerabilities without authorization is illegal and can have serious consequences. The authors are not responsible for any misuse of this information or the exploit provided.
Please use this information responsibly and ethically.