EUVD-2025-3946

Comprehensive Technical Analysis of EUVD-2025-3946

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability in WhoDB, an open-source database management tool, allows an unauthenticated attacker to perform path traversal attacks. This is due to the lack of path traversal prevention mechanisms, enabling the attacker to open any Sqlite3 database present on the host machine.

Severity Evaluation: The vulnerability has a CVSS Base Score of 10.0, which is the highest possible score, indicating a critical severity. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability is exploitable over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources.
• Privileges Required (PR): None (N) - No privileges are required to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required.
• Scope (S): Changed (C) - The vulnerability affects a different security scope.
• Confidentiality (C): High (H) - There is a high impact on confidentiality.
• Integrity (I): High (H) - There is a high impact on integrity.
• Availability (A): None (N) - There is no impact on availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Path Traversal: An attacker can exploit the vulnerability by manipulating the database file path input to include path traversal sequences (e.g., ../../). This allows the attacker to access databases outside the intended directory.

Exploitation Methods:

• Unauthenticated Access: Since no authentication is required, an attacker can directly interact with the application to exploit the vulnerability.
• Remote Exploitation: Given the network attack vector, an attacker can exploit the vulnerability remotely over the internet or local network.

3. Affected Systems and Software Versions

Affected Systems:

• Any system running WhoDB versions prior to 0.45.0.

Software Versions:

• WhoDB versions < 0.45.0.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Upgrade: Upgrade to WhoDB version 0.45.0 or later, which includes a fix for this vulnerability.

Additional Mitigation:

• Input Validation: Implement strict input validation to ensure that database file paths do not include path traversal sequences.
• Access Controls: Restrict access to the WhoDB application to trusted users only.
• Network Segmentation: Segment the network to limit the exposure of the WhoDB application to potential attackers.

5. Impact on European Cybersecurity Landscape

Impact Analysis:

• Data Breach: The vulnerability can lead to unauthorized access to sensitive data stored in Sqlite3 databases, potentially resulting in data breaches.
• Compliance Risks: Organizations may face compliance issues with regulations such as GDPR if sensitive personal data is compromised.
• Reputation Damage: Organizations using vulnerable versions of WhoDB may suffer reputational damage if a breach occurs.

Regulatory Implications:

• GDPR Compliance: Organizations must ensure that they comply with GDPR by protecting personal data. Failure to do so can result in significant fines and legal consequences.
• Incident Reporting: Organizations must report any data breaches to relevant authorities and affected individuals within the mandated timeframe.

6. Technical Details for Security Professionals

Vulnerability Details:

• The vulnerability arises from the lack of path traversal prevention in the code that handles database file paths. Specifically, the user-controlled value for the database file is concatenated with the default directory using .Join() without proper validation.

Code Analysis:

• Vulnerable Code:

  dbPath := filepath.Join(defaultDir, userControlledValue)
  

  • This code does not check if the resulting dbPath resides within the intended directory, allowing path traversal.

Fix Implementation:

• Fixed Code:

  dbPath := filepath.Join(defaultDir, userControlledValue)
  if !strings.HasPrefix(filepath.Clean(dbPath), defaultDir) {
      return errors.New("invalid database path")
  }
  

  • The fix ensures that the resulting path is within the intended directory by using filepath.Clean and checking the prefix.

References:

• GitHub Security Advisory
• Source Code Reference
• Source Code Reference

Conclusion: This vulnerability highlights the importance of input validation and path traversal prevention in software development. Organizations should prioritize upgrading to the patched version and implementing additional security measures to mitigate similar risks in the future.