EUVD-2025-6890

Comprehensive Technical Analysis of EUVD-2025-6890

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the upload_app function of parisneo/lollms-webui V12 (Strawberry) is a Path Traversal error. This type of vulnerability allows an attacker to manipulate file paths to access, read, or delete files and directories outside the intended directory. The lack of user input filtering for the filename value exacerbates the risk.

Severity Evaluation:

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

The high base score indicates a critical vulnerability. The attack vector (AV:N) is network-based, requiring no privileges (PR:N) or user interaction (UI:N). The impact on integrity (I:H) and availability (A:H) is high, meaning an attacker can significantly alter or delete critical system files.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can exploit this vulnerability over the network without needing to authenticate or interact with the user.
• Path Traversal: By crafting a malicious filename input, an attacker can traverse directories and access or delete files outside the intended scope.

Exploitation Methods:

• File Deletion: An attacker can send a specially crafted request to the upload_app function with a filename value that includes directory traversal sequences (e.g., ../../etc/passwd). This can result in the deletion of critical system files.
• Data Exfiltration: Although the vulnerability primarily affects file deletion, an attacker could potentially read sensitive files by manipulating the filename input.

3. Affected Systems and Software Versions

Affected Software:

• parisneo/lollms-webui V12 (Strawberry)
• All versions prior to V14 are potentially vulnerable.

Affected Systems:

• Any system running the affected versions of parisneo/lollms-webui.
• Systems that have network access to the upload_app function.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the latest patch or update to parisneo/lollms-webui V14 or higher, which includes a fix for this vulnerability.
• Input Validation: Implement strict input validation and sanitization for the filename parameter to prevent directory traversal attacks.
• Access Controls: Restrict network access to the upload_app function to trusted users and systems.

Long-Term Mitigation:

• Regular Audits: Conduct regular security audits and code reviews to identify and fix similar vulnerabilities.
• Security Training: Educate developers on secure coding practices to prevent future occurrences of such vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations using parisneo/lollms-webui within the European Union. Given the critical nature of the vulnerability, it could lead to data breaches, system outages, and potential compliance issues with regulations such as GDPR. Organizations must prioritize patching and implementing robust security measures to mitigate the risk.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: upload_app
• Parameter: filename
• Issue: Lack of input filtering leading to Path Traversal

Exploitation Example:

POST /upload_app HTTP/1.1
Host: vulnerable-server.com
Content-Type: application/x-www-form-urlencoded

filename=../../etc/passwd

Mitigation Code Example:

import os

def upload_app(filename):
    # Sanitize the filename to prevent directory traversal
    sanitized_filename = os.path.basename(filename)
    # Proceed with the sanitized filename
    # ...

References:

• NVD Entry
• GitHub Commit
• Huntr Bounty

Assigner: @huntr_ai

EPSS: N/A

ENISA IDs:

• Product: 413b23af-b914-338b-ad05-b0258e665da4
• Vendor: 8df70b77-c702-382d-a0c7-4aab5bc34886

By addressing this vulnerability promptly and effectively, organizations can significantly reduce the risk of exploitation and ensure the integrity and availability of their systems.