Bug 1894238 (CVE-2020-27759)

Summary:	CVE-2020-27759 ImageMagick: outside the range of representable values of type 'int' at MagickCore/quantize.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fedora, jhorak, mike, pahan, rhel8-maint, security-response-team, stransky
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	ImageMagick 7.0.8-68	Doc Type:	If docs needed, set a value
Doc Text:	In IntensityCompare() of /MagickCore/quantize.c, a double value was being casted to int and returned, which in some cases caused a value outside the range of type `int` to be returned. The flaw could be triggered by a crafted input file under certain conditions when processed by ImageMagick.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-24 23:34:44 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:	1901263, 1901264, 1910546
Bug Blocks:	1891602

Description Guilherme de Almeida Suckevicz 2020-11-03 19:19:20 UTC

In ImageMagick, there is an outside the range of representable values of type 'int' at MagickCore/quantize.c.

Reference:
https://github.com/ImageMagick/ImageMagick/issues/1720

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/d44f8a35558951a21367d306a42e5a097f3a43fe

Comment 1 Guilherme de Almeida Suckevicz 2020-11-03 19:19:23 UTC

Acknowledgments:

Name: Suhwan Song (Seoul National University)

Comment 3 Todd Cullum 2020-11-04 20:28:04 UTC

Flaw summary:

In IntensityCompare() of /MagickCore/quantize.c, a double value was being casted to int and returned, which in some cases caused a value outside the range of type `int` to be returned. The flaw could be triggered by a crafted input file under certain conditions when processed by ImageMagick. Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was shown in this case.

Comment 4 Guilherme de Almeida Suckevicz 2020-11-24 19:22:41 UTC

Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1901263]
Affects: fedora-all [bug 1901264]

Comment 5 Product Security DevOps Team 2020-11-24 23:34:44 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-27759

Comment 7 Eric Christensen 2021-02-15 20:47:01 UTC

Statement:

This flaw is out of support scope for Red Hat Enterprise Linux 5, 6, and 7. Inkscape is not affected because it no longer uses a bundled ImageMagick in Red Hat Enterprise Linux 8. For more information regarding support scopes, please see https://access.redhat.com/support/policy/updates/errata.

Red Hat Product Security marked this as Low severity because although it could potentially lead to an impact to application availability, no specific impact was shown in this case.