Artifex jbig2dec 0.13 has a heap-based buffer over-read leading to denial of service (application crash) or disclosure of sensitive information from process memory, because of an integer overflow in the jbig2_decode_symbol_dict function in jbig2_symbol_dict.c in libjbig2dec.a during operation on a crafted .jb2 file.
Artifex jbig2dec 0.13 tiene una sobre lectura de búfer basada en memoria dinámica dando lugar a denegación de servicio (caída de aplicación) o divulgación de información sensible desde la memoria de proceso, debido a un desbordamiento de entero en la función jbig2_decode_symbol_dict en jbig2_symbol_dict.c en libjbig2dec.a durante una operación en un archivo .jb2 manipulado.
Bingchang Liu discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. It was discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly disclose sensitive information. Various other issues were also addressed.
