Uncontrolled Search Path Element in Chaos V-Ray

Executive Summary

This is a pre-authentication remote code execution vulnerability in Chaos Software V-Ray Swarm versions up to 2.0.19. An attacker can upload a malicious package containing a DLL that gets loaded with SYSTEM privileges, allowing full host compromise. It stems from incomplete validation of uploaded archives, enabling uncontrolled search path element and library redirection.

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Detection Guidance

Check if your Chaos V-Ray Swarm version is 2.0.19 or earlier. Inspect network traffic for unusual package uploads to the web interface. Monitor for unexpected DLL loads or system-level processes spawned by the V-Ray Swarm service.

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Impact Analysis

An unauthenticated remote attacker can execute arbitrary code with the highest privileges on the affected system. This leads to complete compromise of the host, including data theft, system manipulation, or further network infiltration. Exploitation requires only network access to the vulnerable V-Ray Swarm web interface.

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Compliance Impact

This vulnerability could lead to unauthorized access, data breaches, or system compromise, violating GDPR's integrity and confidentiality requirements and HIPAA's security rules for protected health information. Organizations may face regulatory penalties, legal liabilities, and reputational damage due to non-compliance.

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Mitigation Strategies

Upgrade Chaos V-Ray Swarm to version 2.0.21 or later immediately. Restrict network access to the V-Ray Swarm web interface. Disable package upload functionality if not required. Monitor for signs of exploitation such as unexpected DLL loads or system compromise.

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