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CVE-2020-27760

Status Candidate

Overview

In `GammaImage()` of /MagickCore/enhance.c, depending on the `gamma` value, it's possible to trigger a divide-by-zero condition when a crafted input file is processed by ImageMagick. This could lead to an impact to application availability. The patch uses the `PerceptibleReciprocal()` to prevent the divide-by-zero from occurring. This flaw affects ImageMagick versions prior to ImageMagick 7.0.8-68.

Related Files

Ubuntu Security Notice USN-5335-1
Posted Mar 21, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5335-1 - It was discovered that ImageMagick incorrectly handled certain values when processing XPM image data or large images. 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 or possibly execute code with the privileges of the user invoking the program. Suhwan Song discovered that ImageMagick incorrectly handled memory when processing PNG,PALM,MIFF 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 or possibly execute code with the privileges of the user invoking the program.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-13144, CVE-2020-25674, CVE-2020-27760, CVE-2020-27766, CVE-2020-27770, CVE-2021-20176
SHA-256 | d71ef36c95a343d18886a6914e5af77ad30344146938b827f9f916138328f31c
Ubuntu Security Notice USN-4988-1
Posted Jun 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4988-1 - It was discovered that ImageMagick incorrectly handled certain malformed image files. 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 or possibly execute code with the privileges of the user invoking the program.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-14528, CVE-2020-25674, CVE-2020-27751, CVE-2020-27756, CVE-2020-27760, CVE-2020-27764, CVE-2020-27768, CVE-2020-27772, CVE-2020-27776
SHA-256 | 5551539bfee9d759009fe862c47462e4fe2c567bec95ae55b9737c8afccdf944
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