Ghostscript -- arbitrary code execution

CERT reports:

Ghostscript contains an optional -dSAFER option, which is supposed
to prevent unsafe PostScript operations. Multiple PostScript
operations bypass the protections provided by -dSAFER, which can
allow an attacker to execute arbitrary commands with arbitrary
arguments. This vulnerability can also be exploited in applications
that leverage Ghostscript, such as ImageMagick, GraphicsMagick,
evince, Okular, Nautilus, and others.
Exploit code for this vulnerability is publicly available.