CVE-2017-9117

En LibTIFF 4.0.7, el programa procesa imágenes BMP sin verificar que biWidth y biHeight en la cabecera de información del bitmap coinciden con la entrada real, lo que lleva a una sobrelectura del búfer basado en heap en bmp2tiff.

In LibTIFF 4.0.6 and possibly other versions, the program processes BMP images without verifying that biWidth and biHeight in the bitmap-information header match the actual input, as demonstrated by a heap-based buffer over-read in bmp2tiff. NOTE: mentioning bmp2tiff does not imply that the activation point is in the bmp2tiff.c file (which was removed before the 4.0.7 release).

It was discovered that LibTIFF incorrectly handled certain malformed images. If a user or automated system were tricked into opening a specially crafted image, a remote attacker could crash the application, leading to a denial of service, or possibly execute arbitrary code with user privileges.