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Privsep: A New Security Isolation Mechanism for OpenStack

Description

OpenStack listens to requests over the network, and (when appropriate) performs operations on the host that require root superpowers. Following best-practice design, most of the code runs as an unprivileged user and only the code that needs additional powers runs as root using a tool called "rootwrap".

This talk discusses the evolution that led to the current rootwrap design, why it has proven to be completely inadequate in practice, and presents a new "privsep" alternative currently being worked on within Oslo.

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