Executive Summary

This vulnerability is a server-side request forgery (SSRF) found in a GraphQL service component used by Altium Enterprise Server and Altium 365. An authenticated user can send a request where the input is treated as a URL by the server. The server then makes an outbound HTTP GET request to that URL without validating or filtering the destination.

Because of this, an attacker can make the server access internal services and metadata endpoints that are normally not accessible from outside the network. The server returns the response body from these requests back to the attacker.

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Impact Analysis

This vulnerability can lead to information disclosure and internal infrastructure reconnaissance. An attacker who is authenticated can use it to access sensitive internal services and metadata that should be protected from external access.

The attacker can retrieve contents from internal endpoints, potentially exposing confidential data or system information. However, the attack is limited to HTTP GET requests without custom headers.

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Mitigation Strategies

To mitigate this vulnerability, update Altium Enterprise Server to version 8.1.1 or later, where the issue has been fixed.

For Altium 365, the issue has been remediated at the service level, so ensure you are using the latest service version.

Additionally, restrict authenticated user access to the GraphQL service component to trusted users only, and monitor for unusual outbound HTTP GET requests originating from the server.

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