CVE-2020-36773: Use After Free

Artifex Ghostscript before 9.53.0 has an out-of-bounds write and use-after-free in devices/vector/gdevtxtw.c for txtwrite because a single character code in a PDF document can map to more than one Unicode code point e.g., for a ligature...

CVE-2020-16307: NULL Pointer Dereference

A null pointer dereference vulnerability in devices/vector/gdevtxtw.c and psi/zbfont.c of Artifex Software GhostScript v9.50 allows a remote attacker to cause a denial of service via a crafted postscript file. This is fixed in v9.51...