EUVD-2023-40058

Comprehensive Technical Analysis of EUVD-2023-40058

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2023-40058, also known as CVE-2023-36076, is an SQL Injection vulnerability in the smanga application version 3.1.9 and earlier. This vulnerability allows remote attackers to execute arbitrary SQL code and gain sensitive information via the mediaId, mangaId, and userId parameters in the php/history/add.php script.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: CVSS 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS score of 9.8 indicates a critical vulnerability due to the following factors:

• 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 score reflects the ease of exploitation and the severe impact on confidentiality, integrity, and availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: Attackers can exploit this vulnerability over the network without requiring any special privileges or user interaction.
• SQL Injection: The primary attack vector involves injecting malicious SQL code into the mediaId, mangaId, and userId parameters.

Exploitation Methods:

• SQL Injection: Attackers can craft specially designed SQL queries to manipulate the database. This can lead to unauthorized access to sensitive information, data manipulation, and potential data exfiltration.
• Code Execution: If the SQL injection allows for command execution, attackers can execute arbitrary code on the server, leading to complete system compromise.

3. Affected Systems and Software Versions

Affected Software:

• smanga: Versions 3.1.9 and earlier

Affected Systems:

• Any system running the vulnerable versions of smanga, particularly those with the php/history/add.php script exposed to the internet.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a patched version of smanga that addresses this vulnerability.
• Input Validation: Implement strict input validation and sanitization for the mediaId, mangaId, and userId parameters.
• Prepared Statements: Use prepared statements with parameterized queries to prevent SQL injection.
• Web Application Firewall (WAF): Deploy a WAF to detect and block malicious SQL injection attempts.

Long-Term Mitigation:

• Regular Security Audits: Conduct regular security audits and code reviews to identify and fix vulnerabilities.
• Security Training: Provide security training for developers to understand and mitigate common vulnerabilities like SQL injection.
• Monitoring: Implement continuous monitoring and logging to detect and respond to suspicious activities.

5. Impact on European Cybersecurity Landscape

The presence of such a critical vulnerability in widely used software like smanga poses a significant risk to the European cybersecurity landscape. Organizations and individuals using the affected software are at risk of data breaches, unauthorized access, and potential financial losses. The high EPSS score of 37 indicates a moderate likelihood of exploitation in the wild, emphasizing the need for immediate action.

6. Technical Details for Security Professionals

Vulnerability Details:

• Vulnerable Parameters: mediaId, mangaId, userId
• Vulnerable Script: php/history/add.php
• Exploitation: Attackers can inject SQL code into the vulnerable parameters to manipulate database queries.

Example Exploit:

mediaId=1'; DROP TABLE users; --

This example demonstrates how an attacker could inject SQL code to drop a table, leading to data loss.

Mitigation Code Example:

$stmt = $pdo->prepare("INSERT INTO history (mediaId, mangaId, userId) VALUES (:mediaId, :mangaId, :userId)");
$stmt->bindParam(':mediaId', $mediaId);
$stmt->bindParam(':mangaId', $mangaId);
$stmt->bindParam(':userId', $userId);
$stmt->execute();

This example uses prepared statements to safely insert data into the database, mitigating the risk of SQL injection.

References:

• GitHub Issue

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their systems and data.