December 2016
Intermediate to advanced
300 pages
6h 36m
English
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Information flow analysis
Another analytical investigation of SELinux policy is information flow analysis. Unlike domain transitions, which look at how one domain can gain a certain set of permissions through transitions toward other domains, information flow analysis looks at how a domain could leak (purposefully or not) information toward another domain.
Information flow analysis is performed by looking at all operations that occur between two types. A source type can be read by a domain, which subsequently can write information to another type. This simple approach is a two-step flow analysis.
However, it is not as simple as just checking read and write operations (although that is of course perfectly possible). Information can be leaked through ...
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