services / Azure / Application Gateway

Azure Application Gateway is a layer-7 (HTTP/HTTPS) load balancer and web-traffic router that terminates TLS, evaluates listener/routing rules, and forwards requests to backend pools; it commonly holds the TLS certificate for the fronted application.

Sits directly in the path of live production HTTP(S) traffic and frequently terminates TLS for the fronted application; write access lets an attacker redirect or intercept that traffic, including decrypted content. Rated HIGH rather than CRITICAL because impact is scoped to the traffic/applications routed through this specific gateway rather than whole-network segmentation.

Microsoft.​Network/​applicationGateways/​write

Creating or updating listener rules, backend pools, or HTTP settings lets an attacker redirect or intercept live production traffic, including TLS-terminated traffic since the gateway typically holds the bound certificate.

Risks

1. Data exfiltration (CRITICAL)
2. Network movement (BOOST)

Scope: HIGH

This privilege may grant access to sensitive data from a single organizational function, or allow interruption of a service supporting a single organizational function.

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