Title :
Constructing the On/Off Covert Channel on Xen
Author :
Xia Yetian ; Zi Xiaochao ; Yao Lihong ; Pan Li ; Li Jianhua
Author_Institution :
Sch. of Inf. Security, Shanghai Jiaotong Univ., Shanghai, China
Abstract :
Virtualization technology is the basis of cloud computing. Multiple virtual machines on a single physical host are isolated from each other. However, covert channel breaks the isolation and leaks sensitive information covertly. In this paper, we construct one type of classic covert timing channel, the on/off channel, on the Xen hyper visor using shared memory. And then we evaluate its bit rate and transmission accuracy. The results show that this type of covert channel is a threat to virtualization technology.
Keywords :
cloud computing; security of data; shared memory systems; virtual machines; virtualisation; Xen hyper visor; bit rate evaluation; cloud computing; covert timing channel; multiple virtual machines; on-off covert channel; sensitive information leakage; shared memory; transmission accuracy evaluation; virtualization technology; Bit rate; Receivers; Security; Virtual machine monitors; Virtual machining; Cloud Computing; Covert Channel; Information Hiding; Xen;
Conference_Titel :
Computational Intelligence and Security (CIS), 2012 Eighth International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-4725-9
DOI :
10.1109/CIS.2012.133
