EUVD-2024-2279

Comprehensive Technical Analysis of EUVD-2024-2279

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2024-2279 affects Admidio, an open-source user management system, specifically in versions prior to 4.3.9. The issue is an SQL Injection vulnerability in the /adm_program/modules/ecards/ecard_send.php file, where the ecard_recipients POST parameter is directly concatenated with the SQL query. This vulnerability allows an attacker to execute arbitrary SQL commands, potentially leading to a full compromise of the application's database.

Severity Evaluation:

• CVSS Base Score: 10.0 (Critical)
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

The high base score indicates the critical nature of the vulnerability. The attack vector (AV:N) is network-based, requiring low complexity (AC:L) and low privileges (PR:L) to exploit. The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), and the scope is changed (S:C), meaning the vulnerability can affect components beyond its security scope.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Blind Condition-Based SQL Injection: The attacker can use conditional statements to infer the structure of the database.
• Time-Based SQL Injection: The attacker can use time delays to extract information from the database.
• Out of Band Interaction: The attacker can use out-of-band channels to retrieve data from the database.

Exploitation Methods:

• Direct SQL Injection: By manipulating the ecard_recipients POST parameter, an attacker can inject malicious SQL code.
• Automated Tools: Attackers can use automated SQL injection tools to exploit the vulnerability and extract sensitive information.

3. Affected Systems and Software Versions

Affected Systems:

• Admidio versions prior to 4.3.9

Software Versions:

• All versions of Admidio before 4.3.9 are vulnerable. Users should upgrade to version 4.3.9 or later to mitigate the risk.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Upgrade: Upgrade to Admidio version 4.3.9 or later.
• Patch: Apply the security patch provided in the GitHub commit 3ff02b0c64a6911ab3e81cd61077f392c0b25248.

Long-Term Mitigation:

• Input Validation: Implement robust input validation and sanitization for all user inputs.
• Prepared Statements: Use prepared statements and parameterized queries to prevent SQL injection.
• Web Application Firewall (WAF): Deploy a WAF to detect and block SQL injection attempts.
• Regular Audits: Conduct regular security audits and code reviews to identify and fix vulnerabilities.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to organizations and groups using Admidio for user management. Given the widespread use of Admidio in Europe, the potential for data breaches and unauthorized access is high. This could lead to:

• Data Breaches: Compromise of sensitive user data.
• Service Disruption: Potential disruption of services due to database corruption.
• Reputation Damage: Loss of trust and reputation for affected organizations.

6. Technical Details for Security Professionals

Vulnerability Details:

• File: /adm_program/modules/ecards/ecard_send.php
• Parameter: ecard_recipients POST parameter
• Issue: Direct concatenation of user input with SQL query

Exploitation Example:

ecard_recipients=1'; DROP TABLE users; --

Mitigation Code Example:

// Use prepared statements
$stmt = $pdo->prepare("SELECT * FROM users WHERE id = :id");
$stmt->execute(['id' => $ecard_recipients]);

References:

• GitHub Security Advisory
• NVD Detail
• GitHub Commit
• Admidio GitHub Repository

Conclusion: The SQL Injection vulnerability in Admidio versions prior to 4.3.9 is critical and requires immediate attention. Organizations should prioritize upgrading to the latest version and implementing robust security measures to protect against such vulnerabilities. Regular monitoring and auditing are essential to maintain a secure cybersecurity posture.