libtiff: out-of-bounds write in _TIFFmemcpy in libtiff/tif_unix.c

An out-of-bounds write flaw was found in the TIFFmemcpy function in libtiff/tifunix.c in the libtiff package. By persuading a victim to open a specially-crafted TIFF image file, a remote attacker could cause a denial of service condition...