Description
This advisory addresses two critical security vulnerabilities present in Mautic versions before 5.2.3. These vulnerabilities could be exploited by authenticated users. * Remote Code Execution (RCE) via Asset Upload: A Remote Code Execution vulnerability has been identified in the asset upload functionality. Insufficient enforcement of allowed file extensions allows an attacker to bypass restrictions and upload executable files, such as PHP scripts. * Path Traversal File Deletion: A Path Traversal vulnerability exists in the upload validation process. Due to improper handling of path components, an authenticated user can manipulate the file deletion process to delete arbitrary files on the host system.
EPSS Score:
0%
Comprehensive Technical Analysis of EUVD-2024-2855
1. Vulnerability Assessment and Severity Evaluation
The EUVD entry EUVD-2024-2855 addresses two critical security vulnerabilities in Mautic versions before 5.2.3. These vulnerabilities are:
- Remote Code Execution (RCE) via Asset Upload: This vulnerability allows an authenticated user to upload executable files, such as PHP scripts, due to insufficient enforcement of allowed file extensions.
- Path Traversal File Deletion: This vulnerability enables an authenticated user to delete arbitrary files on the host system by manipulating the file deletion process through improper handling of path components.
The Base Score of 9.1 (CVSS:3.1) indicates a high severity level. The scoring vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L breaks down as follows:
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): Low (L)
- User Interaction (UI): None (N)
- Scope (S): Changed (C)
- Confidentiality (C): High (H)
- Integrity (I): Low (L)
- Availability (A): Low (L)
This high severity score underscores the critical nature of these vulnerabilities, which can lead to significant security breaches if exploited.
2. Potential Attack Vectors and Exploitation Methods
Remote Code Execution (RCE) via Asset Upload:
- Attack Vector: An authenticated user can upload a malicious PHP script disguised as an allowed file type.
- Exploitation Method: The attacker exploits the insufficient file extension enforcement to upload and execute arbitrary code on the server.
Path Traversal File Deletion:
- Attack Vector: An authenticated user manipulates the file deletion process.
- Exploitation Method: The attacker uses path traversal techniques to delete critical system files, potentially leading to system instability or data loss.
3. Affected Systems and Software Versions
The vulnerabilities affect Mautic versions before 5.2.3. Organizations using these versions are at risk and should prioritize updating to the latest version to mitigate these vulnerabilities.
4. Recommended Mitigation Strategies
- Immediate Patching: Upgrade to Mautic version 5.2.3 or later, which includes fixes for these vulnerabilities.
- Access Control: Implement strict access controls to limit the number of authenticated users with upload and deletion privileges.
- File Upload Validation: Enhance file upload validation to ensure only allowed file types are accepted.
- Monitoring and Logging: Enable comprehensive logging and monitoring to detect and respond to any suspicious activities related to file uploads and deletions.
- Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and address potential security weaknesses.
5. Impact on European Cybersecurity Landscape
The vulnerabilities in Mautic, a widely-used open-source marketing automation tool, pose a significant risk to organizations across Europe. Given the critical nature of these vulnerabilities, successful exploitation could lead to data breaches, system compromises, and potential financial losses. The European cybersecurity landscape must prioritize timely patching and robust security measures to mitigate such risks.
6. Technical Details for Security Professionals
Remote Code Execution (RCE) via Asset Upload:
- Technical Details: The vulnerability arises from insufficient validation of file extensions during the asset upload process. Attackers can exploit this by uploading files with executable extensions, such as
.php, disguised as allowed file types. - Mitigation: Implement strict file type validation and consider using a whitelist approach to restrict allowed file types.
Path Traversal File Deletion:
- Technical Details: The vulnerability stems from improper handling of path components during the file deletion process. Attackers can manipulate the path to traverse directories and delete arbitrary files.
- Mitigation: Ensure proper sanitization of path inputs and implement strict validation to prevent path traversal attacks.
References:
By addressing these vulnerabilities promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and enhance their overall cybersecurity posture.