SELinux

[Daniel J Walsh]

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On 01/20/2011 05:12 PM, Jorge Fábregas wrote:
> On 01/20/2011 05:23 PM, Daniel J Walsh wrote:
>> yum install policycoreutils-sandbox
> 
> Shouldn't this package be a dependency of the package
> policycoreutils-python (owner of sandbox)?
> 
> --
> Jorge
There are two types of sandboxes.  You can run the sandbox command
without the -X and it runs in "script mode".  In this mode it allows the
application executed within the sandbox to read/write all file
descriptors passed in, but is not allowed to open any content.

cat untrusted.doc | sandbox filter.sh > /tmp/trusted.doc

For example would only allow filter.sh to read untrusted.doc, and write
trusted.doc.  If filter.sh attempted to write to ~/.ssh/secrets SELinux
would block the access.  If it attempted to write anywhere or to open
any files other then system files it would be blocked.

sandbox -X

on the other hand, attempts to create a desktop sandbox, and requires X
and lots of other functionality.  So we ship the python script sandbox
in policycoreutils-python, so it can be used on server only
environments, while if you want to run sandbox -X you need to install
policycoreutils-sandbox which will require X.
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