CVE-2021-20224

Published: 25 August 2022

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.

Priority

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package	Release	Status
imagemagick Launchpad, Ubuntu, Debian	focal	Released (8:6.9.10.23+dfsg-2.1ubuntu11.9)
	bionic	Released (8:6.9.7.4+dfsg-16ubuntu6.14)
	kinetic	Not vulnerable (8:6.9.11.60+dfsg-1.3build3)
	lunar	Not vulnerable (8:6.9.11.60+dfsg-1.3build3)
	jammy	Not vulnerable (8:6.9.11.60+dfsg-1.3build2)
	trusty	Released (8:6.7.7.10-6ubuntu3.13+esm3) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (8:6.9.11.57+dfsg-1)
	xenial	Released (8:6.8.9.9-7ubuntu5.16+esm5) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)

Severity score breakdown

Parameter	Value
Base score	5.5
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

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