EUVD-2025-203830

Comprehensive Technical Analysis of EUVD-2025-203830

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-203830 affects the Open edX Platform, a widely-used learning management system. The issue arises from improper access controls for users with the CourseLimitedStaffRole. These users can access and edit courses in the studio environment if they are granted the role at the organization level rather than at the course level. Additionally, they can list courses they have the role on, even though they should not have access to the studio side for those courses.

Severity Evaluation:

• Base Score: 9.9 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L

The high base score indicates a critical vulnerability due to the potential for significant impact on confidentiality, integrity, and availability. The attack vector is network-based (AV:N), requires low complexity (AC:L), and low privileges (PR:L). The scope is changed (S:C), and the impact on confidentiality and integrity is high (C:H, I:H), with low availability impact (A:L).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Unauthorized Access: Users with CourseLimitedStaffRole can access and edit courses they should not have permission to modify.
2. Information Disclosure: These users can list courses they have the role on, potentially exposing sensitive information about course structures and content.

Exploitation Methods:

• Privilege Escalation: An attacker with CourseLimitedStaffRole at the organization level can escalate their privileges to access and modify course content.
• Data Exfiltration: Unauthorized users can view and potentially exfiltrate course data, leading to confidentiality breaches.
• Data Manipulation: Attackers can alter course content, affecting the integrity of the educational material.

3. Affected Systems and Software Versions

Affected Systems:

• Open edX Platform

Affected Software Versions:

• All versions prior to commit 05d0d0936daf82c476617257aa6c35f0cd4ca060.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Apply the fix provided in commit 05d0d0936daf82c476617257aa6c35f0cd4ca060.
• Access Control Review: Conduct a thorough review of user roles and permissions to ensure proper access controls are in place.

Long-Term Mitigation:

• Regular Audits: Implement regular security audits to identify and address access control issues.
• Role-Based Access Control (RBAC): Enforce strict RBAC policies to limit access based on the principle of least privilege.
• Monitoring and Logging: Enhance monitoring and logging to detect and respond to unauthorized access attempts.

5. Impact on European Cybersecurity Landscape

The vulnerability in the Open edX Platform poses a significant risk to educational institutions and organizations using the platform within the European Union. Unauthorized access to course content can lead to data breaches, intellectual property theft, and disruption of educational services. Given the critical nature of the vulnerability, it underscores the importance of robust cybersecurity measures in the education sector, which is a key component of the European cybersecurity landscape.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2025-68270
• Assigner: GitHub_M
• References:
  • GitHub Security Advisory
  • Pull Request 37772
  • Pull Request 37773
  • Commit 05d0d0936daf82c476617257aa6c35f0cd4ca060

ENISA IDs:

• Product ID: 892b9886-511f-3ba0-9a9e-291f1289937d
• Vendor ID: 45eb34e5-ee76-3688-a684-190d924943a6

Technical Recommendations:

• Code Review: Conduct a detailed code review to ensure that access control mechanisms are correctly implemented.
• Penetration Testing: Perform penetration testing to identify and mitigate similar vulnerabilities.
• Security Training: Provide security training for developers and administrators to raise awareness about access control best practices.

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of unauthorized access and data breaches, thereby enhancing the overall cybersecurity posture of the European educational sector.