Bug 1950839

Summary:	ImageMagick: division by zero vulnerability in ConvertRGBToHSV() in MagickCore/gem.c
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
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:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-04-23 14:14:05 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:	1950841, 1950842
Bug Blocks:	1945062

Description Dhananjay Arunesh 2021-04-19 02:55:12 UTC

A division-by-zero exception was found in ImageMagick in MagickCore/gem.c: ConvertRGBToHSV(). An attacker can submit a crafted file to ImageMagick and trigger the division-by-zero exception. It most likely will lead to a DoS attack, but could also cause other problems related to undefined behavior. This bug affects ImageMagick versions prior to 7.0.11-2.

Reference:
https://github.com/ImageMagick/ImageMagick/issues/3320

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/53ec59917b4da74cd4a46ea48f3d3a8fdf4adbde
https://github.com/ImageMagick/ImageMagick6/commit/b3653027e9dc93d03917db602b83d15e70fee575

Comment 1 Dhananjay Arunesh 2021-04-19 02:55:43 UTC

Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1950841]

Comment 2 Dhananjay Arunesh 2021-04-19 02:56:28 UTC

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1950842]

Comment 3 gkamathe 2021-04-23 14:13:31 UTC

Statement:

Red Hat does not consider a division-by-zero in ImageMagick to be a security flaw