SUSE-SU-2019:13961-1

This update for php53 fixes the following issues:

Security issues fixed:

• CVE-2019-6977: Fixed a heap-based buffer overflow the GD Graphics Library used in the imagecolormatch function (bsc#1123354).
• CVE-2019-6978: Fixed a double free in the gdImage*Ptr() functions (bsc#1123522).