The getenv and filenameforall functions in Ghostscript 9.10 ignore the “-dSAFER” argument, which allows remote attackers to read data via a crafted postscript file.
rhn.redhat.com/errata/RHSA-2017-0013.html
rhn.redhat.com/errata/RHSA-2017-0014.html
www.debian.org/security/2016/dsa-3691
www.openwall.com/lists/oss-security/2016/09/29/28
www.openwall.com/lists/oss-security/2016/09/29/5
www.securityfocus.com/bid/96497
bugs.ghostscript.com/show_bug.cgi?id=694724
bugs.ghostscript.com/show_bug.cgi?id=697169
bugzilla.redhat.com/show_bug.cgi?id=1380327