Heap-based buffer overflow in tif_packbits.c in libtiff 4.0.6 and earlier allows remote attackers to crash the application via a crafted bmp file (CVE-2016-5319).
In LibTIFF 4.0.9, there is a heap-based buffer over-read in the function PackBitsEncode in tif_packbits.c (CVE-2017-17942).
TIFFWriteScanline in tif_write.c in LibTIFF 3.8.2 has a heap-based buffer over-read, as demonstrated by bmp2tiff (CVE-2018-10779).