From Nautilus file manager thumbnail to code execution via ghostscript and evince... by @taviso & @tehjh http://seclists.org/oss-sec/2018/q3/157 …pic.twitter.com/UGbUSwXcPe
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Being Turing complete is irrelevant and not a problem. The problem is having bindings to the filesystem and shell, which is *Ghostscript* being broken by design. A proper ps interpreter would bind them to a fake empty emulated filesystem, not host fs.