EUVD-2024-27319

Comprehensive Technical Analysis of EUVD-2024-27319

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-27319 is a remote code execution (RCE) flaw in the parisneo/lollms-webui application. The issue resides in the reinstall_binding functionality within the lollms_core/lollms/server/endpoints/lollms_binding_infos.py file. The root cause is insufficient path sanitization, which allows for path traversal attacks. This vulnerability is critical due to its potential for arbitrary code execution on the server.

Severity Evaluation:

• Base Score: 9.0 (CVSS 3.0)
• Vector String: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

The high base score indicates a severe vulnerability. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and low privileges (PR:L). User interaction (UI:R) is required, but the impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Path Traversal: An attacker can manipulate the binding_path to traverse directories and access unauthorized files or directories.
2. Malicious File Upload: By uploading a malicious __init__.py file, an attacker can execute arbitrary code on the server.

Exploitation Methods:

1. Directory Traversal: The attacker can use directory traversal sequences (e.g., ../../) to navigate to arbitrary directories.
2. Code Execution: Once the attacker has navigated to a controlled directory, they can upload a malicious __init__.py file containing arbitrary code, which will be executed by the server.

3. Affected Systems and Software Versions

Affected Systems:

• The parisneo/lollms-webui application.

Software Versions:

• All versions up to and including the latest version at the time of the vulnerability's publication.

4. Recommended Mitigation Strategies

1. Immediate Actions:

   • Patching: Apply the latest security patches provided by the vendor.
   • Access Control: Restrict access to the reinstall_binding functionality to trusted users only.

2. Long-Term Mitigations:

   • Input Validation: Implement robust input validation and sanitization for all user inputs, especially file paths.
   • Least Privilege: Ensure that the application runs with the least privileges necessary to minimize the impact of potential exploits.
   • Regular Audits: Conduct regular security audits and code reviews to identify and mitigate similar vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using the parisneo/lollms-webui application, particularly those within the European Union. Given the high severity and potential for remote code execution, successful exploitation could lead to data breaches, service disruptions, and unauthorized access to sensitive information. This underscores the importance of timely patching and adherence to best security practices.

6. Technical Details for Security Professionals

Vulnerability Details:

• File: lollms_core/lollms/server/endpoints/lollms_binding_infos.py
• Function: reinstall_binding
• Issue: Insufficient path sanitization leading to path traversal and RCE.

Exploitation Steps:

1. Identify the Vulnerable Endpoint: Locate the reinstall_binding endpoint in the application.
2. Craft Malicious Input: Create a payload that includes directory traversal sequences and a malicious __init__.py file.
3. Execute the Attack: Send the crafted payload to the vulnerable endpoint, triggering the path traversal and code execution.

Detection and Monitoring:

• Log Analysis: Monitor server logs for unusual file access patterns and directory traversal attempts.
• Intrusion Detection Systems (IDS): Implement IDS rules to detect and alert on suspicious activities related to the reinstall_binding functionality.

Conclusion: The vulnerability in parisneo/lollms-webui is a critical concern that requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk of exploitation. Regular security audits and adherence to best practices will help in maintaining a secure cyber environment.

References:

• Huntr Bounty
• Aliases: CVE-2024-2366, GSD-2024-2366
• Assigner: @huntr_ai
• EPSS: 1
• ENISA ID Product: 24276350-33f7-378b-b7f9-d1e128b85504
• ENISA ID Vendor: 575f0669-e0da-37ee-98a6-d110d4ec332d