Security update for ImageMagick (moderate)

This update for ImageMagick fixes the following issues:

Security issues fixed:

• CVE-2018-18024: Fixed an infinite loop in the ReadBMPImage function of
  the coders/bmp.c file. Remote attackers could leverage this
  vulnerability to cause a denial of service via a crafted bmp file.
  (bsc#1111069)
• CVE-2018-18016: Fixed a memory leak in WritePCXImage (bsc#1111072).
• CVE-2018-17965: Fixed a memory leak in WriteSGIImage (bsc#1110747).
• CVE-2018-17966: Fixed a memory leak in WritePDBImage (bsc#1110746).
• CVE-2018-12600: ReadDIBImage and WriteDIBImage allowed attackers to
  cause an out of bounds write via a crafted file. (bsc#1098545)
• CVE-2018-12599: ReadBMPImage and WriteBMPImage allowed attackers to
  cause an out of bounds write via a crafted file. (bsc#1098546)

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