CVE-2012-2806

Un desbordamiento de búfer basado en memoria dinámica ('heap') en la función get_sos en jdmarker.c en libjpeg-turbo v1.2.0 permite a atacantes remotos provocar una denegación de servicio (por caída de la aplicación) y posiblemente ejecutar código de su elección a través de un número de componentes demasiado grande en el encabezado de una imagen JPEG.

A Heap-based buffer overflow was found in the way libjpeg-turbo decompressed certain corrupt JPEG images in which the component count was erroneously set to a large value. An attacker could create a specially-crafted JPEG image that, when opened, could cause an application using libpng to crash or, possibly, execute arbitrary code with the privileges of the user running the application. libjpeg 6b and libjpeg-turbo will use uninitialized memory when decoding images with missing SOS data for the luminance component in presence of valid chroma data. libjpeg-turbo will use uninitialized memory when handling Huffman tables.