Synopsis:          Moderate: ghostscript security update
Advisory ID:       SLSA-2017:0013-1
Issue Date:        2017-01-04
CVE Numbers:       CVE-2013-5653
                   CVE-2016-7977
                   CVE-2016-7978
                   CVE-2016-7979
                   CVE-2016-8602
--

Security Fix(es):

* It was found that the ghostscript functions getenv, filenameforall and
.libfile did not honor the -dSAFER option, usually used when processing
untrusted documents, leading to information disclosure. A specially
crafted postscript document could read environment variable, list
directory and retrieve file content respectively, from the target.
(CVE-2013-5653, CVE-2016-7977)

* It was found that the ghostscript function .setdevice suffered a use-
after-free vulnerability due to an incorrect reference count. A specially
crafted postscript document could trigger code execution in the context of
the gs process. (CVE-2016-7978)

* It was found that the ghostscript function .initialize_dsc_parser did
not validate its parameter before using it, allowing a type confusion
flaw. A specially crafted postscript document could cause a crash code
execution in the context of the gs process. (CVE-2016-7979)

* It was found that ghostscript did not sufficiently check the validity of
parameters given to the .sethalftone5 function. A specially crafted
postscript document could cause a crash, or execute arbitrary code in the
context of the gs process. (CVE-2016-8602)
--

SL7
  x86_64
    ghostscript-9.07-20.el7_3.1.i686.rpm
    ghostscript-9.07-20.el7_3.1.x86_64.rpm
    ghostscript-cups-9.07-20.el7_3.1.x86_64.rpm
    ghostscript-debuginfo-9.07-20.el7_3.1.i686.rpm
    ghostscript-debuginfo-9.07-20.el7_3.1.x86_64.rpm
    ghostscript-devel-9.07-20.el7_3.1.i686.rpm
    ghostscript-devel-9.07-20.el7_3.1.x86_64.rpm
    ghostscript-gtk-9.07-20.el7_3.1.x86_64.rpm
  noarch
    ghostscript-doc-9.07-20.el7_3.1.noarch.rpm

- Scientific Linux Development Team