CVE-2024-37906

Comprehensive Technical Analysis of CVE-2024-37906

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-37906

Description: Admidio, an open-source user management system, is vulnerable to SQL Injection in versions prior to 4.3.9. The vulnerability resides in the /adm_program/modules/ecards/ecard_send.php file, where the ecard_recipients POST parameter is directly concatenated with the SQL query, leading to potential database compromise.

CVSS Score: 9.9

Severity Evaluation:

• Confidentiality Impact: High
• Integrity Impact: High
• Availability Impact: High
• Exploitability: High
• Remediation Level: Official-Fix

The CVSS score of 9.9 indicates a critical vulnerability. The high impact on confidentiality, integrity, and availability, combined with the ease of exploitation, makes this a severe issue that requires immediate attention.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Blind Condition-Based SQL Injection: Attackers can inject SQL code that alters the logic of the query based on conditions, allowing them to extract information without direct feedback.
• Time-Based SQL Injection: Attackers can inject SQL code that causes the database to delay its response, allowing them to infer information based on the timing of the response.
• Out-of-Band Interaction: Attackers can inject SQL code that causes the database to send data to an external server, allowing them to exfiltrate information indirectly.

Exploitation Methods:

• Crafted POST Requests: Attackers can send specially crafted POST requests to the ecard_send.php endpoint, manipulating the ecard_recipients parameter to inject malicious SQL code.
• Automated Tools: Attackers can use automated SQL injection tools to identify and exploit the vulnerability, making it easier to extract sensitive information from the database.

3. Affected Systems and Software Versions

Affected Software:

• Admidio versions prior to 4.3.9

Affected Systems:

• Any web server hosting Admidio versions prior to 4.3.9
• Organizations and groups using Admidio for user management

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade: Immediately upgrade to Admidio version 4.3.9 or later, which includes the fix for this vulnerability.
• Patch: Apply the patch provided in the GitHub commit 3ff02b0c64a6911ab3e81cd61077f392c0b25248.

Long-Term Mitigations:

• Input Validation: Implement robust input validation and sanitization for all user inputs, especially those used in SQL queries.
• 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 mitigate similar vulnerabilities.

5. Impact on Cybersecurity Landscape

Immediate Impact:

• Data Breaches: Organizations using vulnerable versions of Admidio are at high risk of data breaches, including the exposure of sensitive user information.
• Service Disruption: Attackers can exploit this vulnerability to disrupt services, leading to downtime and potential financial losses.

Long-Term Impact:

• Reputation Damage: Organizations experiencing data breaches due to this vulnerability may face significant reputational damage.
• Compliance Issues: Failure to address this vulnerability may result in non-compliance with data protection regulations, leading to legal consequences.

6. Technical Details for Security Professionals

Vulnerable Code Snippet:

$query = "SELECT * FROM users WHERE email IN ('" . $_POST['ecard_recipients'] . "')";

Fixed Code Snippet:

$query = "SELECT * FROM users WHERE email IN (:ecard_recipients)";
$stmt = $pdo->prepare($query);
$stmt->execute(['ecard_recipients' => $_POST['ecard_recipients']]);

Exploitation Example:

ecard_recipients=test@example.com'); DROP TABLE users; --

Detection:

• Log Analysis: Monitor web server logs for unusual SQL query patterns and errors.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on SQL injection attempts.

Response:

• Incident Response Plan: Develop and implement an incident response plan to quickly address any detected exploitation attempts.
• User Notification: Inform users of potential data breaches and provide guidance on securing their accounts.

Conclusion

CVE-2024-37906 represents a critical SQL injection vulnerability in Admidio that can lead to severe data breaches and service disruptions. Immediate mitigation through upgrading to the patched version and implementing robust security practices is essential to protect against potential exploitation. Regular security audits and proactive measures will help maintain a secure cybersecurity landscape.