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Re: ghostscript: bypassing executeonly to escape -dSAFER sandbox (CVE-2018-17961)


From: Alan Coopersmith <alan.coopersmith () oracle com>
Date: Wed, 10 Oct 2018 08:46:05 -0700

On 10/10/18 05:53 AM, Hanno Böck wrote:
Nautilus is trying to solve this by sandboxing the thumbnailers.
However this depends on bubblewrap and is currently fail-open, i.e. if
bubblewrap is not available it will not disable the thumbnailing, it
will just not sandbox it. In practice this means it's often not
sandboxed. I doubt this will change any time soon.

And bubblewrap is very specific to running on a Linux kernel, so users
of GNOME on top of other kernels are also left unprotected by it.

--
        -Alan Coopersmith-               alan.coopersmith () oracle com
         Oracle Solaris Engineering - https://blogs.oracle.com/alanc


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