CVE-2022-0909

Un error de División por cero en tiffcrop en libtiff versión 4.3.0 permite a atacantes causar una denegación de servicio por medio de un archivo tiff diseñado. Para usuarios que compilan libtiff a partir de fuentes, la corrección está disponible con el commit f8d0f9aa

A floating-point exception (FPE) flaw was found in LibTIFF’s computeOutputPixelOffsets() function in tiffcrop.c file. This flaw allows an attacker with a crafted TIFF file to trigger a divide-by-zero error, causing a crash that leads to a denial of service.

It was discovered that LibTIFF was not properly performing checks to guarantee that allocated memory space existed, which could lead to a NULL pointer dereference via a specially crafted file. An attacker could possibly use this issue to cause a denial of service. It was discovered that LibTIFF was not properly performing checks to avoid division calculations where the denominator value was zero, which could lead to an undefined behavior situation via a specially crafted file. An attacker could possibly use this issue to cause a denial of service.