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Erschienen in:
2016 | OriginalPaper | Buchkapitel
Moving in Next Door: Network Flooding as a Side Channel in Cloud Environments
verfasst von : Yatharth Agarwal, Vishnu Murale, Jason Hennessey, Kyle Hogan, Mayank Varia
Erschienen in: Cryptology and Network Security
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Abstract
Co-locating multiple tenants’ virtual machines (VMs) on the same host underpins public clouds’ affordability, but sharing physical hardware also exposes consumer VMs to side channel attacks from adversarial co-residents. We demonstrate passive bandwidth measurement to perform traffic analysis attacks on co-located VMs. Our attacks do not assume a privileged position in the network or require any communication between adversarial and victim VMs. Using a single feature in the observed bandwidth data, our algorithm can identify which of 3 potential YouTube videos a co-resident VM streamed with 66 % accuracy. We discuss defense from both a cloud provider’s and a consumer’s perspective, showing that effective defense is difficult to achieve without costly under-utilization on the part of the cloud provider or over-utilization on the part of the consumer.