A Logical Specification and Analysis for SELinux MLS Policy

时间:2015-02-09 06:10:48
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文件名称:A Logical Specification and Analysis for SELinux MLS Policy

文件大小:245KB

文件格式:PDF

更新时间:2015-02-09 06:10:48

SELinux

ABSTRACT The SELinux mandatory access control (MAC) policy has recently added a multi-level security (MLS) model which is able to express a fine granularity of control over a subject’s access rights. The problem is that the richness of this policy makes it impractical to verify, by hand, that a given policy has certain important information flow properties or is compliant with another policy. To address this, we have modeled the SELinux MLS policy using a logical specification and implemented that specification in the Prolog language. Furthermore, we have developed some analyses for testing the properties of a given policy as well an algorithm to determine whether one policy is compliant with another. We have implemented these analyses in Prolog and compiled our implementation into a tool for SELinux MLS policy analysis, called PALMS. Using PALMS, we verified some important properties of the SELinux MLS reference policy, namely that it satisfies the simple security condition and ?-property defined by Bell and LaPadula [2].


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