Security update for ghostscript (important)

This update for ghostscript to version 9.26 fixes the following issues:

Security issues fixed:

• CVE-2018-19475: Fixed bypass of an intended access restriction in
  psi/zdevice2.c (bsc#1117327)
• CVE-2018-19476: Fixed bypass of an intended access restriction in
  psi/zicc.c (bsc#1117313)
• CVE-2018-19477: Fixed bypass of an intended access restriction in
  psi/zfjbig2.c (bsc#1117274)
• CVE-2018-19409: Check if another device is used correctly in
  LockSafetyParams (bsc#1117022)
• CVE-2018-18284: Fixed potential sandbox escape through 1Policy operator
  (bsc#1112229)
• CVE-2018-18073: Fixed leaks through operator in saved execution stacks
  (bsc#1111480)
• CVE-2018-17961: Fixed a -dSAFER sandbox escape by bypassing executeonly
  (bsc#1111479)
• CVE-2018-17183: Fixed a potential code injection by specially crafted
  PostScript files (bsc#1109105)

Version update to 9.26 (bsc#1117331):

• Security issues have been the primary focus
• Minor bug fixes and improvements
• For release summary see: <a href=“http://www.ghostscript.com/doc/9.26/News.htm”>http://www.ghostscript.com/doc/9.26/News.htm</a>

This update was imported from the SUSE:SLE-12:Update update project.