EUVD-2025-6899

Comprehensive Technical Analysis of EUVD-2025-6899

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-6899 is a path traversal issue affecting the save-workflow and load-workflow functionalities in modelscope/agentscope versions prior to the fix. This vulnerability allows an attacker to read and write arbitrary JSON files on the filesystem, which can lead to the exposure or modification of sensitive information such as configuration files, API keys, and hardcoded passwords.

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 due to the ease of exploitation (low complexity) and the significant impact on integrity and availability. The attack vector is network-based, requiring no privileges or user interaction, which further amplifies the risk.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Remote Exploitation: An attacker can exploit this vulnerability over the network without needing any special privileges or user interaction.
2. Internal Network Attacks: An insider or someone with access to the internal network can exploit this vulnerability to escalate privileges or gain unauthorized access to sensitive data.

Exploitation Methods:

1. Reading Sensitive Files: By manipulating the file paths in the load-workflow functionality, an attacker can read sensitive JSON files containing configuration data, API keys, or other critical information.
2. Writing Malicious Data: By exploiting the save-workflow functionality, an attacker can overwrite existing JSON files or create new ones with malicious content, potentially disrupting the system's operation or injecting malicious code.

3. Affected Systems and Software Versions

Affected Software:

• modelscope/agentscope versions prior to the fix.

Affected Systems:

• Any system running the vulnerable versions of modelscope/agentscope.
• Systems that rely on JSON files for configuration, API keys, or other sensitive data.

4. Recommended Mitigation Strategies

1. Patch Management:

   • Immediately update to the latest version of modelscope/agentscope that includes the fix for this vulnerability.

2. Access Controls:

   • Implement strict access controls to limit who can interact with the save-workflow and load-workflow functionalities.
   • Use least privilege principles to restrict access to sensitive files and directories.

3. Input Validation:

   • Ensure that all file paths and inputs are properly validated and sanitized to prevent path traversal attacks.

4. Monitoring and Logging:

   • Implement robust monitoring and logging to detect any suspicious activities related to file access and modifications.
   • Regularly review logs for any unauthorized access attempts.

5. Network Segmentation:

   • Segment the network to isolate critical systems and limit the potential impact of an attack.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations within the European Union, particularly those handling sensitive data. The potential for unauthorized access and modification of critical information can lead to data breaches, financial loss, and reputational damage. Compliance with regulations such as GDPR may also be compromised, leading to legal repercussions.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Path Traversal
• Affected Functions: save-workflow and load-workflow
• Impact: Read and write arbitrary JSON files on the filesystem.

Exploitation Steps:

1. Identify Vulnerable Endpoints: Locate endpoints that utilize the save-workflow and load-workflow functionalities.
2. Craft Malicious Inputs: Create inputs that exploit the path traversal vulnerability to access or modify sensitive files.
3. Execute Attack: Send the crafted inputs to the vulnerable endpoints to achieve the desired outcome.

Mitigation Code Example:

import os

def sanitize_path(path):
    # Ensure the path is within the allowed directory
    allowed_directory = "/allowed/directory/"
    sanitized_path = os.path.abspath(os.path.join(allowed_directory, path))
    if not sanitized_path.startswith(allowed_directory):
        raise ValueError("Invalid path")
    return sanitized_path

def save_workflow(path, data):
    sanitized_path = sanitize_path(path)
    with open(sanitized_path, 'w') as file:
        file.write(data)

def load_workflow(path):
    sanitized_path = sanitize_path(path)
    with open(sanitized_path, 'r') as file:
        return file.read()

References:

• NVD Entry
• Huntr Bounty
• GitHub Repository
• Vulnerable Code

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risks associated with this path traversal issue and protect their sensitive data.