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CVE-2020-27756

Status Candidate

Overview

In ParseMetaGeometry() of MagickCore/geometry.c, image height and width calculations can lead to divide-by-zero conditions which also lead to undefined behavior. This flaw can be triggered by a crafted input file processed by ImageMagick and could impact application availability. The patch uses multiplication in addition to the function `PerceptibleReciprocal()` in order to prevent such divide-by-zero conditions. This flaw affects ImageMagick versions prior to 7.0.9-0.

Related Files

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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