Cross-VM Cache Timing Attacks on Virtualized Network Functions

Youngjoo SHIN

IEICE TRANSACTIONS on Information and Systems   Vol.E102-D    No.9    pp.1874-1877
Publication Date: 2019/09/01
Publicized: 2019/05/27
Online ISSN: 1745-1361
DOI: 10.1587/transinf.2019EDL8048
Type of Manuscript: LETTER
Category: Information Network
cross-VM cache timing attack,  network function virtualization,  virtualized network function,  

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Network function virtualization (NFV) achieves the flexibility of network service provisioning by using virtualization technology. However, NFV is exposed to a serious security threat known as cross-VM cache timing attacks. In this letter, we look into real security impacts on network virtualization. Specifically, we present two kinds of practical cache timing attacks on virtualized firewalls and routers. We also propose some countermeasures to mitigate such attacks on virtualized network functions.