EUVD-2025-23373

Comprehensive Technical Analysis of EUVD-2025-23373

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The Institute-of-Current-Students 1.0 application is vulnerable to Incorrect Access Control in the mydetailsstudent.php endpoint. Specifically, the myds GET parameter accepts an email address and returns the corresponding student's personal information without proper validation of the requesting user's identity or permissions. This vulnerability allows both authenticated and unauthenticated attackers to enumerate and retrieve sensitive student details by manipulating the email value in the request URL.

Severity Evaluation: The vulnerability has a CVSS Base Score of 9.8, which is considered critical. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H indicates the following:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): Low (L)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Unchanged (U)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

This high severity score underscores the critical nature of the vulnerability, which can lead to significant information disclosure and potential misuse of sensitive student data.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Direct URL Manipulation: An attacker can directly manipulate the myds GET parameter in the URL to input different email addresses, thereby retrieving personal information of various students.
2. Automated Scripts: Attackers can use automated scripts to enumerate email addresses and systematically retrieve student data.
3. Phishing Campaigns: Attackers can leverage this vulnerability in conjunction with phishing campaigns to gather more email addresses to exploit.

Exploitation Methods:

• Manual Exploitation: Attackers can manually input different email addresses into the myds parameter to retrieve student information.
• Automated Exploitation: Using tools like Burp Suite or custom scripts, attackers can automate the process of enumerating email addresses and retrieving data.
• Data Aggregation: Attackers can aggregate the retrieved data to build comprehensive profiles of students, which can be used for further malicious activities.

3. Affected Systems and Software Versions

Affected Systems:

• Institute-of-Current-Students 1.0 application
• Any system or application that integrates with the mydetailsstudent.php endpoint

Software Versions:

• Institute-of-Current-Students 1.0

4. Recommended Mitigation Strategies

Immediate Mitigation:

1. Disable the Vulnerable Endpoint: Temporarily disable the mydetailsstudent.php endpoint until a patch is applied.
2. Implement Access Controls: Ensure that the endpoint validates the identity and permissions of the requesting user before returning any data.
3. Input Validation: Implement strict input validation to ensure that only authorized email addresses can be queried.

Long-Term Mitigation:

1. Patch Management: Apply the official patch or update provided by the vendor to fix the vulnerability.
2. Regular Security Audits: Conduct regular security audits and penetration testing to identify and mitigate similar vulnerabilities.
3. User Education: Educate users about the risks of phishing and the importance of not sharing sensitive information.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly in the education sector. The unauthorized access to student data can lead to:

• Data Breaches: Sensitive student information can be exposed, leading to potential identity theft and fraud.
• Regulatory Compliance Issues: Institutions may face regulatory penalties under GDPR for failing to protect student data.
• Reputation Damage: Educational institutions may suffer reputational damage, leading to a loss of trust among students and stakeholders.

6. Technical Details for Security Professionals

Technical Analysis:

• Vulnerable Endpoint: mydetailsstudent.php
• Vulnerable Parameter: myds
• Exploitation Method: Direct URL manipulation and automated scripts
• Mitigation Techniques:
  • Access Control: Implement robust access control mechanisms to validate user identity and permissions.
  • Input Validation: Ensure that the myds parameter is validated against a list of authorized email addresses.
  • Logging and Monitoring: Implement logging and monitoring to detect and respond to unauthorized access attempts.

References:

• CWE-284: Improper Access Control
• GitHub Gist with Exploit Details

Conclusion: The vulnerability in the Institute-of-Current-Students 1.0 application is critical and requires immediate attention. Implementing robust access controls, input validation, and regular security audits are essential steps to mitigate the risk. Educational institutions must prioritize the protection of student data to maintain compliance with regulations and preserve trust.