Artifex Ghostscript 9.25 and earlier allows attackers to bypass a sandbox protection mechanism via vectors involving the 1Policy operator.
https://www.debian.org/security/2018/dsa-4336
https://usn.ubuntu.com/3803-1/
https://support.f5.com/csp/article/K22141757?utm_source=f5support&%3Butm_medium=RSS
https://security.gentoo.org/glsa/201811-12
https://lists.debian.org/debian-lts-announce/2018/10/msg00013.html
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44101
https://bugs.ghostscript.com/show_bug.cgi?id=699963
https://bugs.chromium.org/p/project-zero/issues/detail?id=1696
https://access.redhat.com/errata/RHSA-2018:3834
http://www.securityfocus.com/bid/107451
http://www.openwall.com/lists/oss-security/2018/10/16/2
http://git.ghostscript.com/?p=ghostpdl.git%3Bh=8d19fdf63f91f50466b08f23e2d93d37a4c5ea0b