CVE-2024-29858

Comprehensive Technical Analysis of CVE-2024-29858

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2024-29858 CISA Vulnerability Name: CVE-2024-29858 Description: In MISP (Malware Information Sharing Platform) before version 2.4.187, the __uploadLogo function in app/Controller/OrganisationsController.php does not properly validate logo uploads. CVSS Score: 9.8

The CVSS score of 9.8 indicates a critical vulnerability. This high score is likely due to the potential for unauthorized access, data manipulation, and system compromise. The lack of proper validation in the logo upload process can lead to various security issues, including arbitrary file uploads, which can be exploited to execute malicious code on the server.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Arbitrary File Upload: An attacker could upload a malicious file disguised as a logo, which could then be executed on the server.
• Remote Code Execution (RCE): If the uploaded file contains executable code, the attacker could gain control over the server.
• Cross-Site Scripting (XSS): If the uploaded file contains malicious scripts, it could be used to perform XSS attacks on other users.

Exploitation Methods:

• Uploading Malicious Files: An attacker could craft a specially designed file that bypasses the current validation checks and uploads it as a logo.
• Exploiting Server-Side Scripts: If the server processes the uploaded files without proper sanitization, an attacker could execute server-side scripts.
• Phishing and Social Engineering: An attacker could use social engineering techniques to trick users into uploading malicious files.

3. Affected Systems and Software Versions

Affected Software:

• MISP versions before 2.4.187

Affected Systems:

• Any system running the vulnerable versions of MISP, including but not limited to:
  • Linux servers
  • Windows servers
  • Cloud-based deployments

4. Recommended Mitigation Strategies

Immediate Actions:

• Upgrade to the Latest Version: Upgrade MISP to version 2.4.187 or later, which includes the patch for this vulnerability.
• Temporary Workaround: Disable the logo upload functionality until the system can be updated.

Long-Term Mitigations:

• Input Validation: Implement robust input validation and sanitization for all file uploads.
• Access Controls: Enforce strict access controls to limit who can upload files.
• Regular Audits: Conduct regular security audits and code reviews to identify and fix similar vulnerabilities.
• Monitoring and Logging: Implement comprehensive monitoring and logging to detect and respond to suspicious activities.

5. Impact on Cybersecurity Landscape

The discovery of CVE-2024-29858 highlights the importance of thorough input validation and the potential risks associated with file upload functionalities. This vulnerability underscores the need for continuous security assessments and timely patching of software. Organizations relying on MISP for threat intelligence sharing must prioritize updating their systems to mitigate the risk of exploitation.

6. Technical Details for Security Professionals

Vulnerable Code: The vulnerability is located in the __uploadLogo function within app/Controller/OrganisationsController.php. The function does not properly validate the uploaded logo file, allowing for potential malicious file uploads.

Patch Details: The patch can be found in the following GitHub commit:

• Patch Commit

Technical Recommendations:

• Code Review: Conduct a detailed code review of the __uploadLogo function and related file handling code to ensure proper validation and sanitization.
• Security Testing: Perform thorough security testing, including penetration testing, to identify and address similar vulnerabilities.
• Incident Response: Develop and implement an incident response plan to quickly detect and respond to any exploitation attempts.

Conclusion: CVE-2024-29858 is a critical vulnerability that requires immediate attention. Organizations using MISP should prioritize updating their systems and implementing robust security measures to protect against potential exploitation. Regular security assessments and proactive mitigation strategies are essential to maintain a strong cybersecurity posture.