EUVD-2024-19223

Comprehensive Technical Analysis of EUVD-2024-19223

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2024-19223 pertains to a missing validation of the pip field in a POST request sent to the /customnode/install endpoint. This flaw allows an attacker to execute a pip install command on a user-controlled package or URL, leading to remote code execution (RCE) on the server.

Severity Evaluation:

• Base Score: 10.0 (Critical)
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

The CVSS score of 10.0 indicates a critical vulnerability due to the high impact on confidentiality, integrity, and availability, as well as the ease of exploitation.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network Attack: An attacker can send a crafted POST request to the /customnode/install endpoint over the network.
• Phishing: An attacker could trick a user into visiting a malicious website that sends the crafted request.

Exploitation Methods:

• Crafted POST Request: An attacker can send a POST request with a malicious pip field to the vulnerable endpoint.
• Malicious Package Installation: The attacker can specify a URL or package name that, when installed, executes arbitrary code on the server.

3. Affected Systems and Software Versions

Affected Software:

• Product: ComfyUI-Manager
• Versions: 0 < 2.51.1

Vendor:

• Name: ltdrdata

All systems running the affected versions of ComfyUI-Manager are vulnerable to this exploit.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to ComfyUI-Manager version 2.51.1 or later, which includes a fix for this vulnerability.
• Input Validation: Implement strict validation for the pip field in the /customnode/install endpoint to ensure only trusted packages are installed.

Long-Term Mitigation:

• Code Review: Conduct a thorough code review to identify and fix similar validation issues.
• Security Training: Provide security training for developers to emphasize the importance of input validation and secure coding practices.

5. Impact on European Cybersecurity Landscape

This vulnerability poses a significant risk to organizations using ComfyUI-Manager, particularly those in critical sectors such as finance, healthcare, and government. The potential for remote code execution can lead to data breaches, service disruptions, and unauthorized access to sensitive information.

Regulatory Compliance:

• Organizations must ensure compliance with GDPR and other relevant regulations by promptly addressing this vulnerability to protect personal data.

Cybersecurity Awareness:

• This incident highlights the need for continuous monitoring and timely patching of software to mitigate risks associated with critical vulnerabilities.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /customnode/install
• Field: pip
• Exploit: Crafted POST request with a malicious pip field value.

Code Reference:

• GitHub Commit: ffc095a3e5acc1c404773a0510e6d055a6a72b0e
• Relevant Code: manager_server.py#L798

Mitigation Steps:

1. Update Software: Ensure all instances of ComfyUI-Manager are updated to version 2.51.1 or later.
2. Implement Validation: Add server-side validation to sanitize and validate the pip field.
3. Monitor Logs: Monitor server logs for any suspicious activity related to the /customnode/install endpoint.
4. Network Security: Implement network security measures such as firewalls and intrusion detection systems to detect and block malicious requests.

Conclusion: The vulnerability EUVD-2024-19223 is a critical issue that requires immediate attention. Organizations should prioritize patching affected systems and implementing robust input validation to mitigate the risk of remote code execution. Continuous monitoring and adherence to best security practices are essential to safeguard against such vulnerabilities in the future.