CVE-2021-20224

Publication date 25 August 2022

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

An integer overflow issue was discovered in ImageMagick's ExportIndexQuantum() function in MagickCore/quantum-export.c. Function calls to GetPixelIndex() could result in values outside the range of representable for the 'unsigned char'. When ImageMagick processes a crafted pdf file, this could lead to an undefined behaviour or a crash.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
imagemagick	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	20.04 LTS focal	Fixed 8:6.9.10.23+dfsg-2.1ubuntu11.9
	18.04 LTS bionic	Fixed 8:6.9.7.4+dfsg-16ubuntu6.14
	16.04 LTS xenial	Fixed 8:6.8.9.9-7ubuntu5.16+esm5
	14.04 LTS trusty	Fixed 8:6.7.7.10-6ubuntu3.13+esm3

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Severity score breakdown

Parameter	Value
Base score	5.5 · Medium
Attack vector	Local
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-5736-1
ImageMagick vulnerabilities
24 November 2022

USN-5736-2
ImageMagick vulnerabilities
24 November 2022

USN-6200-1
ImageMagick vulnerabilities
4 July 2023