EUVD-2024-0845

Comprehensive Technical Analysis of EUVD-2024-0845

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability affects Parse Server, an open-source backend that runs on Node.js. Prior to versions 6.5.5 and 7.0.0-alpha.29, calling an invalid Parse Server Cloud Function name or Cloud Job name can crash the server and potentially allow for code injection, internal store manipulation, or remote code execution.

Severity Evaluation: The Base Score of 9.1 (CVSS:3.1) indicates a critical vulnerability. The vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N)
• Attack Complexity (AC): High (H)
• Privileges Required (PR): None (N)
• User Interaction (UI): None (N)
• Scope (S): Changed (C)
• Confidentiality (C): High (H)
• Integrity (I): High (H)
• Availability (A): High (H)

The high scores in confidentiality, integrity, and availability indicate that successful exploitation could lead to severe impacts, including unauthorized access to sensitive data, data corruption, and service disruption.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attacks: An attacker can exploit this vulnerability over the network without requiring physical access to the system.
• Code Injection: By calling an invalid Cloud Function or Cloud Job name, an attacker could inject malicious code.
• Internal Store Manipulation: The vulnerability allows attackers to manipulate the internal store, potentially leading to data corruption or unauthorized data access.
• Remote Code Execution: Successful exploitation could result in the execution of arbitrary code on the server.

Exploitation Methods:

• Invalid Function Calls: Crafting requests with invalid Cloud Function or Cloud Job names to trigger the vulnerability.
• Payload Injection: Embedding malicious payloads within the invalid function names to achieve code execution or data manipulation.

3. Affected Systems and Software Versions

Affected Versions:

• Parse Server versions prior to 6.5.5
• Parse Server versions 7.0.0-alpha.1 to 7.0.0-alpha.28

Systems:

• Any infrastructure running Node.js and deploying Parse Server within the affected version range.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Upgrade: Upgrade to Parse Server version 6.5.5 or 7.0.0-alpha.29, which include the patch for string sanitation.
• Workaround: Implement string sanitation for Cloud Function names and Cloud Job names before they reach the Parse Server.

Long-Term Mitigation:

• Regular Updates: Ensure that all software components, including Parse Server, are regularly updated to the latest versions.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential vulnerabilities.
• Input Validation: Implement robust input validation and sanitation mechanisms to prevent injection attacks.

5. Impact on European Cybersecurity Landscape

Regulatory Compliance:

• Organizations using Parse Server must ensure compliance with regulations such as GDPR, which mandates the protection of personal data.
• Failure to address this vulnerability could result in data breaches, leading to regulatory penalties and loss of customer trust.

Cybersecurity Posture:

• The vulnerability underscores the importance of timely patch management and proactive security measures.
• European organizations should prioritize the security of open-source components, which are increasingly integral to modern software stacks.

6. Technical Details for Security Professionals

Patch Details:

• The patch in versions 6.5.5 and 7.0.0-alpha.29 introduces string sanitation for Cloud Function names and Cloud Job names to prevent invalid calls from crashing the server or allowing code injection.

References:

• GitHub Advisory: GHSA-6hh7-46r2-vf29
• NVD Entry: CVE-2024-29027
• GitHub Commits:
  • Commit 5ae6d6a36d75c4511029f0ba5673ae4b2999179b
  • Commit 9f6e3429d3b326cf4e2994733c618d08032fac6e
• Release Notes:
  • Parse Server 6.5.5
  • Parse Server 7.0.0-alpha.29

Conclusion: This vulnerability highlights the critical importance of timely updates and robust input validation in maintaining the security of backend systems. Organizations should prioritize patching affected systems and implementing stringent security measures to mitigate potential risks.