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IdentityServer4 API Scope Secret

Service Name: IdentityServer4

Service Description: IdentityServer4 is an OpenID Connect and OAuth 2.0 framework for ASP.NET Core that provides authentication, single sign-on, and API access control for modern web applications and APIs.

Service Address: https://identityserver4.io/

Validation Type: API Auth

IP Allow list: IP restrictions can be implemented at the application level using ASP.NET Core middleware or through hosting infrastructure.

Secret Access Scope: Grants access to protected API resources defined within the scope boundaries of the IdentityServer4 implementation.

Secret Revokement URL: Does not exist (managed programmatically through the IdentityServer4 admin interface or directly in configuration)

Secret Example: secret_api_scope_K7MDENG-bPxRfiCYEXAMPLEKEY

Suspicious Activity Investigation Instructions:

  • Review IdentityServer4 logs for unusual token requests or authentication attempts
  • Check for unexpected API access patterns or high volumes of requests
  • Monitor for access attempts from unusual geographic locations or IP addresses
  • Examine token validation failures in the logs
  • Review client application behavior for deviations from normal patterns

Mitigation Instructions:

  • Rotate the API scope secret immediately in the IdentityServer4 configuration

  • Update the secret in all legitimate client applications

  • Consider implementing more restrictive scopes to limit access

  • Review and update client configurations to ensure proper security settings
  • Enable additional security features like PKCE for public clients
  • Implement IP restrictions if appropriate for your use case
  • Consider shortening token lifetimes to reduce the impact of compromised

tokens

  • Enable detailed logging to better monitor future authentication activities