services / Azure / Web App app setting

App settings of an Azure App Service web app, injected into the running app as environment variables.

App settings routinely hold API keys, passwords, and connection secrets returned in cleartext; treated as credential material.

Microsoft.​Web/​Sites/​config/​web/​appsettings/​write

Creating/updating an app setting changes a runtime environment variable the app consumes, enabling injection of attacker-controlled config/credentials executed in the app's context.

Risks

1. Data manipulation (HIGH)
2. Lateral movement (BOOST)

Scope: CRITICAL

This privilege may grant access to sensitive data from a significant fraction of organizational functions, allow interruption of critical organizational services, or its exploit could lead to significant privilege escalation.

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