EUVD-2025-6871

Comprehensive Technical Analysis of EUVD-2025-6871

1. Vulnerability Assessment and Severity Evaluation

The EUVD-2025-6871 entry describes a Server-Side Request Forgery (SSRF) vulnerability in the POST /worker_generate_stream API endpoint of the Controller API Server in haotian-liu/llava version v1.2.0 (LLaVA-1.6). This vulnerability allows attackers to exploit the victim Controller API Server's credentials to perform unauthorized web actions or access unauthorized web resources.

Severity Evaluation:

• Base Score: 9.3
• Base Score Version: 3.0
• Base Score Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

The CVSS score of 9.3 indicates a critical vulnerability. The vector string breaks down as follows:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• PR:N (No Privileges Required): No privileges are required to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required.
• S:C (Changed Scope): The vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component.
• C:H (High Confidentiality Impact): There is a high impact on the confidentiality of the system.
• I:L (Low Integrity Impact): There is a low impact on the integrity of the system.
• A:N (No Availability Impact): There is no impact on the availability of the system.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Unauthorized Web Actions: Attackers can use the SSRF vulnerability to perform actions on behalf of the victim server, such as accessing internal services or APIs.
• Data Exfiltration: Attackers can exfiltrate sensitive data by making requests to internal resources that are not accessible from the outside network.
• Credential Abuse: Attackers can leverage the server's credentials to access other services or resources that trust the victim server.

Exploitation Methods:

• Crafted Requests: Attackers can send specially crafted HTTP requests to the vulnerable endpoint, causing the server to make unauthorized requests to internal or external resources.
• Internal Network Scanning: Attackers can use the SSRF vulnerability to scan the internal network for other vulnerable services or resources.
• Metadata Extraction: Attackers can extract metadata from internal services, such as version information, which can be used for further exploitation.

3. Affected Systems and Software Versions

Affected Software:

• haotian-liu/llava version v1.2.0 (LLaVA-1.6)

Affected Systems:

• Any system running the haotian-liu/llava Controller API Server version v1.2.0.
• Systems that rely on the Controller API Server for critical operations, such as data processing, user authentication, and resource management.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Patching: Upgrade to a patched version of haotian-liu/llava that addresses the SSRF vulnerability.
• Network Segmentation: Implement network segmentation to limit the access of the Controller API Server to critical internal resources.
• Input Validation: Enforce strict input validation and sanitization for the POST /worker_generate_stream API endpoint.

Long-Term Mitigation:

• Regular Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar vulnerabilities.
• Least Privilege Principle: Apply the principle of least privilege to ensure that the Controller API Server has the minimum necessary permissions.
• Monitoring and Logging: Implement robust monitoring and logging to detect and respond to suspicious activities related to the vulnerable endpoint.

5. Impact on European Cybersecurity Landscape

The SSRF vulnerability in haotian-liu/llava poses a significant risk to organizations within the European Union, particularly those relying on the Controller API Server for critical operations. The potential for unauthorized access to internal resources and data exfiltration can lead to severe breaches of confidentiality and integrity, impacting compliance with regulations such as GDPR.

Regulatory Compliance:

• Organizations must ensure that they comply with GDPR and other relevant regulations by implementing appropriate security measures to protect personal data.
• Failure to address this vulnerability could result in regulatory penalties and loss of customer trust.

Industry Impact:

• The vulnerability highlights the need for robust security practices in software development and deployment.
• It underscores the importance of collaboration between vendors, security researchers, and organizations to identify and mitigate vulnerabilities promptly.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: POST /worker_generate_stream
• Vulnerable Component: Controller API Server in haotian-liu/llava version v1.2.0
• Exploitation: Attackers can send crafted HTTP requests to the vulnerable endpoint, causing the server to make unauthorized requests to internal or external resources.

Detection and Response:

• Intrusion Detection Systems (IDS): Deploy IDS to monitor network traffic for suspicious activities related to the vulnerable endpoint.
• Security Information and Event Management (SIEM): Use SIEM solutions to correlate and analyze logs for indicators of compromise related to SSRF attacks.
• Incident Response Plan: Develop and implement an incident response plan to quickly detect, respond, and recover from SSRF attacks.

References:

• NVD Entry
• Huntr Bounty

By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risk of SSRF attacks and protect their critical assets.