EUVD-2023-3061

Comprehensive Technical Analysis of EUVD-2023-3061

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2023-3061 pertains to the blockreassurance module, which is designed to provide reassuring information to customers about the trustworthiness of a store. The vulnerability arises from an AJAX function within the module that allows unauthorized modification of any value in the configuration table. This issue has been addressed in version 5.1.4 of the module.

Severity Evaluation:

• Base Score: 9.1 (CVSS 3.1)
• Vector String: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H

The high base score indicates a critical vulnerability. The key factors contributing to this score include:

• Attack Vector (AV:N): The vulnerability can be exploited over the network.
• Attack Complexity (AC:L): The attack requires low complexity.
• Privileges Required (PR:L): The attacker needs low-level privileges.
• User Interaction (UI:N): No user interaction is required.
• Scope (S:C): The vulnerability affects components beyond the security scope.
• Confidentiality (C:L), Integrity (I:L), Availability (A:H): The vulnerability has a low impact on confidentiality and integrity but a high impact on availability.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability remotely over the network.
• Low Privilege Requirement: The attacker needs only low-level privileges, which could be obtained through other means such as phishing or social engineering.

Exploitation Methods:

• AJAX Function Manipulation: The attacker can manipulate the AJAX function to modify configuration values, potentially leading to unauthorized access or disruption of services.
• Configuration Table Modification: By altering configuration values, the attacker can change critical settings, disable security features, or inject malicious code.

3. Affected Systems and Software Versions

Affected Systems:

• Systems running the blockreassurance module version ≤ 5.1.3.

Software Versions:

• All versions of blockreassurance prior to 5.1.4 are vulnerable.

4. Recommended Mitigation Strategies

Immediate Actions:

• Update to the Latest Version: Upgrade the blockreassurance module to version 5.1.4 or later.
• Patch Management: Ensure that all systems are regularly updated and patched.

Long-Term Strategies:

• Access Control: Implement strict access controls to limit privileges and reduce the attack surface.
• Network Security: Use firewalls and intrusion detection systems to monitor and block suspicious network activity.
• Regular Audits: Conduct regular security audits and vulnerability assessments.
• User Education: Educate users about phishing and social engineering attacks to prevent unauthorized access.

5. Impact on European Cybersecurity Landscape

The vulnerability in blockreassurance poses a significant risk to e-commerce platforms using PrestaShop, which is widely used in Europe. The potential for unauthorized configuration changes can lead to data breaches, service disruptions, and loss of customer trust. This underscores the importance of timely patching and robust security measures in the European cybersecurity landscape.

6. Technical Details for Security Professionals

Vulnerability Details:

• Module: blockreassurance
• Function: AJAX function allowing unauthorized modification of configuration values.
• Impact: Potential for unauthorized access, data breaches, and service disruptions.

References:

• GitHub Advisory: GHSA-xfm3-hjcc-gv78
• NVD Entry: CVE-2023-47110
• Patch Commit: 0a74bf1ebb907eef39e235a3a6dca0c28ed3ad23
• Release Notes: v5.1.4

Assigner: GitHub_M

ENISA IDs:

• Product: blockreassurance (≤ 5.1.3)
• Vendor: PrestaShop

Conclusion: The vulnerability in blockreassurance is critical and requires immediate attention. Organizations using this module should prioritize updating to the latest version and implement robust security measures to mitigate potential risks. The European cybersecurity landscape must remain vigilant against such vulnerabilities to protect sensitive data and maintain customer trust.