[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Tue, 9 Oct 2018 15:32:02 -0700
From: Tavis Ormandy <taviso@...gle.com>
To: oss-security@...ts.openwall.com
Cc: Bob Friesenhahn <bfriesen@...ple.dallas.tx.us>
Subject: Re: ghostscript: bypassing executeonly to escape
-dSAFER sandbox (CVE-2018-17961)
On Tue, Oct 9, 2018 at 3:27 PM Perry E. Metzger <perry@...rmont.com> wrote:
> I keep wondering if there isn't a way to fully remove the dangerous
> bits from a postscript interpreter so it can _only_ be used to view
> the document and literally has no file system access compiled in at
> all, so there's no way to touch the fs etc. regardless of what flags
> the interpreter is invoked with.
>
> (I, too, find removing the ability to look at historical postscript
> documents a bit more draconian than I like.)
>
>
I've discussed it with upstream, it's a hard no because they feel it would
make ghostscript non-conforming (i.e. non-conforming with the Adobe
PostScript Language Reference Manual)
We probably have similar thoughts on this, but that is the final word from
upstream.
Tavis.
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
