Date: Tue, 16 Oct 2018 13:33:32 -0700 From: Tavis Ormandy <taviso@...gle.com> To: Perry Metzger <perry@...rmont.com> Cc: oss-security@...ts.openwall.com Subject: Re: ghostscript: 1Policy operator gives access to .forceput CVE-2018-18284 On Tue, Oct 16, 2018 at 12:57 PM Perry E. Metzger <perry@...rmont.com> wrote: > On Tue, 16 Oct 2018 11:06:14 -0700 Tavis Ormandy <taviso@...gle.com> > wrote: > > Side note: I'm done looking at ghostscript for now, but still > > *strongly* recommend that we deprecate untrusted postscript and > > disable ghostscript coders by default in policy.xml. > > Again, given that PostScript is an archival format for a lot of > documents, wouldn't a version of ghostscript with all the ability to > do anything dangerous removed from the interpreter at compile time be > rational? > > We have to work with what we've got. Even with the easy to exploit stuff compiled out (which upstream do not support), I haven't been bothering to get CVE's for all the memory corruption or UaF I've been reporting, because nobody can keep up with these operator leaks anyway. Tavis.
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