Messages in this thread | | | Subject | Re: How to black list shared libraries and executable | From | Jes Sorensen <> | Date | 04 Mar 2004 04:40:26 -0500 |
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>>>>> "Michael" == Michael Frank <mhf@linuxmail.org> writes:
Michael> Just wondering on how to build a kernel-level facility which Michael> would require shared libraries and executables to be "keyed" Michael> or even "signed" to run on linux.
Michael> This is to prevent execution of software not specifically Michael> authorized.
The shared libraries are going to cause you 'issues' since these are all loaded by dynamic linker. All the kernel loads is ld.so, the rest of them are mmap'ed from userland.
So if you want to take this approach, you would have to hack a special ld.so that only allows your authorized libraries and only authorize the kernel to load that dynamic linker. Otherwise you have to do content validation for all mmap operations.
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