Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an integer overflow in the jbig2_image_compose function in jbig2_image.c during operations on a crafted .jb2 file, leading to a denial of service (application crash) or disclosure of sensitive information from process memory.
Artifex jbig2dec 0.13 permite escrituras y lecturas fuera de límites debido a un desbordamiento de entero en la función jbig2_image_compose en jbig2_image.c durante operaciones en un archivo .jb2 manipulado, dando lugar a una denegación de servicio (caída de aplicación) o divulgación de información sensible de la memoria de proceso.
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.
