services / Azure / Bastion Host

Azure Bastion is a managed PaaS jump host deployed in a VNet that brokers secure browser-based RDP/SSH connectivity to VMs without exposing public IPs on those VMs.

A production secure-access entry point into a private network; controlling or observing it affects reachability of all VMs behind it.

Microsoft.​Network/​BastionHosts/​getactivesessions/​action

Exposes active administrative/remote sessions in real time, letting an attacker identify which accounts currently hold interactive access to which VMs, useful for timing further attacks or identifying high-value targets to follow up on.

Risks

1. Account discovery (LOW)

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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