EUVD-2024-2181

Comprehensive Technical Analysis of EUVD-2024-2181

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in parisneo/lollms version 9.5 is a Local File Inclusion (LFI) issue stemming from insufficient path sanitization. Specifically, the sanitize_path_from_endpoint function fails to properly sanitize Windows-style paths, allowing for directory traversal attacks. This vulnerability is critical due to its potential to compromise system availability and confidentiality.

Severity Evaluation:

• Base Score: 9.1
• Base Score Version: 3.0
• Base Score Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

The CVSS score of 9.1 indicates a high severity vulnerability. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and no privileges (PR:N) or user interaction (UI:N). The impact on confidentiality (C:H) and availability (A:H) is high, while the integrity impact (I:N) is none.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Directory Traversal: Attackers can exploit the vulnerability by manipulating input paths to traverse directories and access files outside the intended directory.
• Local File Inclusion: By including local files, attackers can read sensitive information or execute arbitrary code if the included files contain executable scripts.

Exploitation Methods:

• Windows-style Paths: Attackers can use backward slashes (\) to bypass the sanitization mechanism and perform directory traversal.
• Routes: The vulnerability can be exploited through various routes, including personalities and /del_preset.

3. Affected Systems and Software Versions

Affected Systems:

• Windows systems running parisneo/lollms version 9.5.

Software Versions:

• parisneo/lollms version 9.5 and potentially other versions below 9.8.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a patched version of parisneo/lollms (version 9.8 or later) that addresses the vulnerability.
• Input Validation: Implement additional input validation and sanitization mechanisms to ensure that all paths are properly sanitized.
• Access Controls: Restrict access to sensitive files and directories to minimize the impact of potential LFI attacks.

Long-term Mitigation:

• Code Review: Conduct a thorough code review to identify and fix similar vulnerabilities.
• Security Training: Provide security training for developers to ensure they are aware of common vulnerabilities and best practices for secure coding.

5. Impact on European Cybersecurity Landscape

The vulnerability in parisneo/lollms version 9.5 poses a significant risk to organizations using this software, particularly those in the European Union. The potential for directory traversal and LFI attacks can lead to data breaches, loss of system availability, and compromise of sensitive information. This underscores the importance of timely patching and robust security practices to protect against such vulnerabilities.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: sanitize_path_from_endpoint
• Issue: Insufficient sanitization of Windows-style paths (backward slash \).
• Exploitation: Attackers can perform directory traversal by manipulating input paths to include backward slashes.

References:

• NVD: CVE-2024-4315
• GitHub Commit: 95ad36eeffc6a6be3e3f35ed35a384d768f0ecf6
• GitHub Repository: parisneo/lollms
• Huntr Bounty: 8a1b0197-2c36-4276-b92b-630a2a9bb09c

Assigner:

• Huntr AI: @huntr_ai

ENISA IDs:

• Product: d0cab20d-a3f7-3acb-a230-c3c6e7723691
• Vendor: 0da8ff07-64bc-323c-8963-40101894cdcc

Conclusion: The vulnerability in parisneo/lollms version 9.5 is a critical issue that requires immediate attention. Organizations should prioritize patching and implementing robust security measures to mitigate the risk of LFI and directory traversal attacks. This incident highlights the importance of continuous monitoring and proactive security practices in the European cybersecurity landscape.