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CVE-2025-27446: Incorrect Permission Assignment for Critical Resource in Apache APISIX

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Overview

The Common Vulnerabilities and Exposures (CVE) system has identified a significant vulnerability in the Apache APISIX’s Java plugin runner, labeled as CVE-2025-27446. This vulnerability is a classic case of incorrect permission assignment for a critical resource. It allows local attackers to exploit the system, potentially leading to unwanted system compromise or data leakage. This issue is of high importance due to its severity and the widespread use of Apache APISIX, increasing the potential damage that can be inflicted if not addressed promptly.

Vulnerability Summary

CVE ID: CVE-2025-27446
Severity: High (CVSS: 7.8)
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

Apache APISIX(java-plugin-runner) | 0.2.0 – 0.5.0

How the Exploit Works

The exploit takes advantage of the incorrectly assigned permissions to the local listening file in the Apache APISIX plugin runner. An attacker with local access to the system can manipulate these permissions to gain elevated privileges. With these elevated privileges, the attacker can perform actions that are typically restricted to higher-level users, potentially leading to system compromise or data leakage.

Conceptual Example Code

Here’s a conceptual command-line example of how the vulnerability might be exploited:

# Attacker gains access to the system
$ ssh user@vulnerable.system.com
# Attacker locates the plugin runner
$ cd /path/to/apisix/plugin/runner
# Attacker escalates privileges using the permission flaw
$ chmod 777 critical_file

Note: This is a simplified and conceptual example. Actual exploitation of this vulnerability might require more advanced techniques or specific conditions.
It’s essential to upgrade your Apache APISIX to version 0.6.0 or higher to rectify this vulnerability. Alternatively, applying vendor patches or using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as temporary mitigation strategies.

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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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