Rogue Agent: How a Single Code Block Could Hijack Your AI Conversations in Google’s DialogFlow

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AI chatbots widen the attack surface. We took over one to steal data and gain toeholds for launching campaigns.

Varonis Threat Labs discovered a critical vulnerability in Google Cloud Platform’s (GCP) Dialogflow CX service, Google’s flagship conversational AI platform for building interactive experiences across voice and text chatbots. We’ve named this latest discovery Rogue Agent.

The vulnerability allowed attackers to exploit the Code Blocks feature to inject persistent malicious code into the Dialogflow agents’ pipeline, silently exfiltrating conversations and conducting large-scale phishing campaigns. To initiate, the exploit requires a single edit permission known as dialogflow.playbooks.update on one agent.

Rogue Agent highlights the growing risk posed by the integration of AI into cloud platforms. Like a turncoat spy who exposes colleagues to the enemy, our Rogue Agent could compromise other agents on the same project by overriding their shared execution environment.

Rogue Agent demonstrates how AI expands the attack surface. Using...

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