Bug 1946739 (CVE-2021-20311)

Summary:	CVE-2021-20311 ImageMagick: Division by zero in sRGBTransformImage() in MagickCore/colorspace.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fedora, jhorak, mike, pahan
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ImageMagick 7.0.11	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in ImageMagick, where a division by zero in sRGBTransformImage() in the MagickCore/colorspace.c may trigger undefined behavior via a crafted image file that is submitted by an attacker processed by an application using ImageMagick. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-02 23:28:12 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1946740, 1946741, 1947266
Bug Blocks:	1946747, 1946749

Description Pedro Sampaio 2021-04-06 18:43:07 UTC

A flaw was found in ImageMagick before version 7.0.11. A division by zero in sRGBTransformImage() in MagickCore/colorspace.c may trigger undefined behavior via crafted image file.

Upstream patch:

https://github.com/ImageMagick/ImageMagick/commit/70aa86f5d5d8aa605a918ed51f7574f433a18482

Comment 1 Pedro Sampaio 2021-04-06 18:43:37 UTC

Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1946740]
Affects: fedora-all [bug 1946741]

Comment 2 Todd Cullum 2021-04-06 21:20:35 UTC

Statement:

This flaw is out of support scope for Red Hat Enterprise Linux 6 and 7. It does not affect Red Hat Enterprise Linux 8 because the ImageMagick package is not shipped. To learn more about Red Hat Enterprise Linux support scope, please see https://access.redhat.com/support/policy/updates/errata/ .