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CVE-2025-53652: Jenkins Git Parameter Plugin Unvalidated Input Vulnerability

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Overview

The CVE-2025-53652 vulnerability is a critical security issue that affects Jenkins Git Parameter Plugin version 439.vb_0e46ca_14534 and earlier. This vulnerability allows an attacker with Item/Build permission to inject arbitrary values into Git parameters, potentially leading to system compromise or data leakage. Given Jenkins’ widespread usage in continuous integration and deployment processes, this vulnerability poses a significant risk to many software development environments and could have far-reaching impacts if exploited.

Vulnerability Summary

CVE ID: CVE-2025-53652
Severity: High (8.2 CVSS Score)
Attack Vector: Network
Privileges Required: Low (Item/Build permission)
User Interaction: None
Impact: System Compromise, Data Leakage

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Product | Affected Versions

Jenkins Git Parameter Plugin | 439.vb_0e46ca_14534 and earlier

How the Exploit Works

This vulnerability arises from the lack of input validation in the Jenkins Git Parameter Plugin. When a Git parameter value is submitted to the build, the plugin does not verify that the submitted value matches one of the offered choices. This lack of validation allows an attacker with Item/Build permission to inject arbitrary values into Git parameters, potentially leading to execution of unintended commands or access to sensitive information.

Conceptual Example Code

The following is a hypothetical example of how the vulnerability might be exploited:

POST /jenkins/build HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"gitParameters": {
"choices": ["master", "develop"],
"selected": "master; rm -rf /"
}
}

In this example, an attacker submits a build request with a malicious `selected` value. Instead of a legitimate branch name, the attacker injects a command to delete all files in the root directory (`rm -rf /`). This command could cause significant damage to the Jenkins server if executed.

Remediation

To remediate this vulnerability, apply the latest patch provided by the vendor. If the patch cannot be applied immediately, consider using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to filter out malicious requests as a temporary mitigation. Note, however, that these are not long-term solutions, and patching the vulnerability should be prioritized.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.
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