.../scopes : Lists the access scopes granted to the service account. 2. Security Feature: SSRF Prevention
Ensure your request includes Metadata-Flavor: Google .
Buckets of Fun: Getting Backstage at the DEFCON 31 Cloud ...
Metadata-Flavor: Google
When working with the metadata server and service accounts, keep in mind:
The keyword fragment fetch-url-http-3A-2F-2F... suggests a JavaScript fetch() call or a similar HTTP client incorrectly encoding the URL. In Node.js, Python, or browser environments (though metadata server is accessible from browsers), encoding can break the request.
The metadata server is a read-only HTTP server available from within every Google Cloud compute resource (VMs, GKE nodes, serverless environments). It provides information about the instance, its project, and—most importantly—its attached service accounts. Buckets of Fun: Getting Backstage at the DEFCON 31 Cloud
The address of this secret vault is http://metadata.google.internal/computeMetadata/v1/instance/service-accounts/ .
If you see this string in your logs, it is not a glitch. It is a whisper from the internet, telling you that someone just tried to pick the lock on your front door.
The URL you've provided appears to be related to fetching metadata from Google Cloud Platform (GCP), specifically for a service account associated with a Compute Engine instance. Let's break down the URL and discuss its features and implications: In Node
Detailed guide on attaching identities to compute resources.
Ensure your HTTP client does not follow redirects that point to internal metadata endpoints. 3. Implementation Example (Python)
: This directory contains information about the service accounts attached to the instance. and—most importantly—its attached service accounts.
If you need this for a language other than Python or for a specific platform (e.g., Node.js, CLI tool, Terraform), let me know and I can tailor the feature.
: Because this server contains sensitive tokens, it is a frequent target for Server-Side Request Forgery (SSRF) attacks. If an attacker can force your application to "fetch" this internal URL, they can steal your service account credentials.