In GraphicsMagick 1.3.27, there is an infinite loop and application hang in the ReadBMPImage function (coders/bmp.c). Remote attackers could leverage this vulnerability to cause a denial of service via an image file with a crafted bit-field mask value.

Affected: Ubuntu:Pro:14.04:LTS: graphicsmagick, Ubuntu:Pro:16.04:LTS: graphicsmagick, Ubuntu:Pro:18.04:LTS: graphicsmagick, Ubuntu:20.04:LTS: graphicsmagick

It was discovered that GraphicsMagick was not properly performing bounds checks when processing TGA image files, which could lead to a heap buffer overflow. If a user or automated system were tricked into processing a specially crafted TGA image file, an attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2018-20184)

It was discovered that GraphicsMagick was not properly validating bits per pixel data when processing DIB image files. If a user or automated system were tricked into processing a specially crafted DIB image file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2018-20189)

It was discovered that GraphicsMagick was not properly processing bit-field mask values in BMP image files, which could result in the execution of an infinite loop. If a user or automated system were tricked into processing a specially crafted BMP image file, an attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2018-5685)

It was discovered that GraphicsMagick was not properly validating data used in arithmetic operations when processing MNG image files, which could result in a divide-by-zero error. If a user or automated system were tricked into processing a specially crafted MNG image file, an attacker…