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Memory deduplication improves memory density by merging identical memory pages in multi-tenanted cloud. However, memory deduplication is vulnerable to memory disclosure attacks and covert channel attacks. The covert channel bases on the difference in write access time on deduplicated memory pages that are re-created by Copy-on-Write technique. Prior works have shown that malicious attackers can make...
At present, With the wide application of Linux system, the security performance of Linux system is meeting more and more challenges. This paper analyzes the the security flaw of traditional Linux security mechanism in which the presence of superuser root violates the principle of least privilege in security system design, which brings various kinds of privilege elevation attacks. The current fine-grained...
The overhead caused by virtualization makes it difficult to apply VM in the applications which require high degrees of both performance isolation and efficiency, such as the high performance computing. In this paper, we present a lightweight virtual machine, named Solo. It simplifies the design of VMM greatly by making most privileged instructions bypass the VMM, except the I/O operations. Solo allows...
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