Webhook-url-http-3a-2f-2f169.254.169.254-2fmetadata-2fidentity-2foauth2-2ftoken ❲Full Version❳

The metadata service dutifully hands over a JSON Web Token (JWT) . This is a high-level digital badge that says, "I am the Admin Server."

: Attackers can use the token to authenticate against Azure Key Vaults, Databases, Storage Accounts, and private repositories to steal sensitive enterprise data.

To obtain a token, you make an HTTP GET request to this endpoint, providing a Metadata: true header to prove you are authorized to access local metadata. Sample Request (Linux/PowerShell) curl 'http://169.254.169' -H Metadata:true Use code with caution. Expected JSON Response

This specific path is unique to Microsoft Azure. It is the endpoint used by Azure Managed Identities. When a VM requests this URI, the local metadata service returns an Azure Active Directory (Azure AD / Entra ID) OAuth2 access token matching the identity assigned to that specific VM. How the Webhook Exploitation Works The metadata service dutifully hands over a JSON

webhook-url=http://169.254.169.254/metadata/identity/oauth2/token

An explicit example of this risk is embedded in the string: webhook-url-http-3A-2F-2F169.254.169.254-2Fmetadata-2Fidentity-2Foauth2-2Ftoken .

This exact scenario has been used in CTF competitions and bug bounty reports, with payouts often exceeding $10,000. Sample Request (Linux/PowerShell) curl 'http://169

In the cloud computing world (AWS, Azure, GCP, Alibaba), this IP address is the .

: Ensure your cloud "Managed Identities" have only the bare minimum permissions. If a token is stolen, the damage is limited to what that specific identity can do.

This approach is essential for understanding how to leverage the ARM token to explore further permissions or execute actions withi... Hunters Security When a VM requests this URI, the local

: Never allow webhooks to point to internal or link-local IP ranges. Use an allowlist for domains or block the 169.254.0.0/16 range entirely.

Security teams can look for: