Secure serverless computing using dynamic information flow control
Secure serverless computing using dynamic information flow control
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DOI:
10.1145/3276488
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发表时间:
2018-02
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通讯作者:
Kalev Alpernas;C. Flanagan;Sadjad Fouladi;L. Ryzhyk;Shmuel Sagiv;Thomas Schmitz;Keith Winstein
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文献类型:
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作者:
Kalev Alpernas;C. Flanagan;Sadjad Fouladi;L. Ryzhyk;Shmuel Sagiv;Thomas Schmitz;Keith Winstein
The rise of serverless computing provides an opportunity to rethink cloud security. We present an approach for securing serverless systems using a novel form of dynamic information flow control (IFC). We show that in serverless applications, the termination channel found in most existing IFC systems can be arbitrarily amplified via multiple concurrent requests, necessitating a stronger termination-sensitive non-interference guarantee, which we achieve using a combination of static labeling of serverless processes and dynamic faceted labeling of persistent data. We describe our implementation of this approach on top of JavaScript for AWS Lambda and OpenWhisk serverless platforms, and present three realistic case studies showing that it can enforce important IFC security properties with modest overhead.