Headline
CVE-2021-20246: Invalid Bug ID
A flaw was found in ImageMagick in MagickCore/resample.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability.
‘1928941?cve=title’ is not a valid bug number nor an alias to a bug.
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Related news
Ubuntu Security Notice 6200-2 - USN-6200-1 fixed vulnerabilities in ImageMagick. Unfortunately these fixes were incomplete for Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. This update fixes the problem.
Ubuntu Security Notice 6200-1 - It was discovered that ImageMagick incorrectly handled the "-authenticate" option for password-protected PDF files. An attacker could possibly use this issue to inject additional shell commands and perform arbitrary code execution. This issue only affected Ubuntu 20.04 LTS. It was discovered that ImageMagick incorrectly handled certain values when processing PDF files. If a user or automated system using ImageMagick were tricked into opening a specially crafted PDF file, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 20.04 LTS.
Ubuntu Security Notice 5736-1 - It was discovered that ImageMagick incorrectly handled certain values when processing PDF files. If a user or automated system using ImageMagick were tricked into opening a specially crafted PDF file, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. Zhang Xiaohui discovered that ImageMagick incorrectly handled certain values when processing image data. If a user or automated system using ImageMagick were tricked into opening a specially crafted image, an attacker could exploit this to cause a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 22.10.