Date: Wed, 10 Oct 2018 10:10:58 +0100 From: Eddie Chapman <eddie@...k.net> To: oss-security@...ts.openwall.com, Tavis Ormandy <taviso@...gle.com> Subject: Re: ghostscript: bypassing executeonly to escape -dSAFER sandbox (CVE-2018-17961) On 09/10/18 14:58, Tavis Ormandy wrote: > Because nautilus will automatically invoke > evince-thumbnailer without any user-interaction, just browsing a website > is enough to trigger the vulnerability in some common configurations. While the vulnerability in ghostscript itself is clear in this thread, does anyone have any more info on the above aspect of this? i.e is the above scenario (inadvertently running postscript, perhaps contained in an image, through ghostscript by just browsing a malicious site) limited to just nautilus in gnome environments? Do other browsers/environments handle this better or do they do similar? It seems that, strictly speaking, the "critical" nature of this vulnerability hinges on the behaviour of the browser/desktop environment. Otherwise the scope is limited to an individual manually downloading a postscript file and opening it outside of the browser. Apologies if I'm missing anything obvious or if this has been covered elsewhere online.
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