Summary
NVIDIA Dynamo for Linux contains a server-side request forgery vulnerability that may allow an attacker to cause the server to send requests to unintended destinations. Under conditions where attacker-controlled input influences server-side request handling, successful exploitation could disclose information accessible from the server's network position.
Affected context
The vulnerability occurs in NVIDIA Dynamo for Linux when externally influenced request data can affect destinations contacted by the server. Risk depends on the deployment's exposed interfaces, request-processing behavior, network reachability, and the sensitivity of internal or external resources visible from the server environment.
Exploit preconditions
- Attack surface: A network-accessible NVIDIA Dynamo service or interface that processes attacker-influenced request destinations
- Required access: Access sufficient to submit or influence the relevant server-side request input; authentication requirements may vary by deployment
- Trigger point: Server-side handling of a request that causes an outbound connection
- Why exploitation is possible: Destination validation or network egress controls may not sufficiently restrict where the server can connect
Why this happens
The underlying bug is a failure to adequately constrain server-side outbound requests based on attacker-influenced input. When an application accepts or derives a request destination without robust validation of schemes, hosts, addresses, and redirect behavior, it may be induced to contact unintended services. This maps to CWE-918, Server-Side Request Forgery, because the server becomes an unintended network client operating with its own access and trust relationships.
Potential impact
- An attacker may obtain information from reachable internal or cloud services.
- The vulnerability could expose response data or service metadata.
- The server may be used to access network locations unavailable to the attacker directly.
- In some deployments, exploitation can contribute to credential or topology disclosure.
General mitigation guidance
Mitigation generally focuses on reducing trust in request destinations and
limiting the server's network reachability.
Common defensive patterns include:
- Allowing outbound requests only to an explicit, minimal destination allowlist.
- Validating URL schemes, hostnames, resolved addresses, ports, and redirect targets.
- Blocking loopback, link-local, private, multicast, and other unintended address ranges where they are not required.
- Applying network egress policies and isolating sensitive internal services.
- Avoiding exposure of response content when it is not necessary for the feature.
- Running the service with only the network and application privileges it requires.
How teams detect issues like this
Organizations can look for SSRF risks through:
- Static analysis rules identifying outbound request APIs fed by request parameters or other untrusted data.
- Code review checks for missing destination allowlists, DNS-rebinding protections, redirect validation, and private-address filtering.
- Runtime monitoring of unusual outbound connections, especially to loopback, metadata, private, or administrative networks.
- Egress policy enforcement and network telemetry that records destination hosts, ports, and response patterns.
- Automated security review tools that flag user-controlled URL construction and unrestricted server-side fetch behavior.
