CVE-2020-12268

La función jbig2_image_compose en el archivo jbig2_image.c en Artifex jbig2dec versiones anteriores a la versión 0.18, tiene un desbordamiento de búfer en la región heap de la memoria.

An integer overflow was found in jbig2dec, which causes an out-of-bounds read/write in the jbig2_image_compose function. This flaw could potentially result in the execution of code on the system. Applications that use jbig2dec with untrusted input may be vulnerable to this flaw. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

It was discovered that jbig2dec incorrectly handled memory when parsing invalid files. An attacker could use this issue to cause jbig2dec to crash, leading to a denial of service. It was discovered that jbig2dec incorrectly handled memory when processing untrusted input. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code.