Bug 1894684 (CVE-2020-27765)

Summary: CVE-2020-27765 ImageMagick: division by zero at MagickCore/segment.c
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: 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 7.0.9-0 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in ImageMagick in MagickCore/segment.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-11-24 23:35:02 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1901275, 1901276, 1910540    
Bug Blocks: 1891602    

Description Guilherme de Almeida Suckevicz 2020-11-04 19:06:20 UTC
In ImageMagick, there is a Divisoin by Zero at MagickCore/segment.c.

Reference:
https://github.com/ImageMagick/ImageMagick/issues/1730

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/a4c89f2a61069ad7637bc7749cc1a839de442526

Comment 1 Guilherme de Almeida Suckevicz 2020-11-04 19:06:23 UTC
Acknowledgments:

Name: Suhwan Song (Seoul National University)

Comment 2 Todd Cullum 2020-11-04 22:28:41 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 .

Comment 3 Guilherme de Almeida Suckevicz 2020-11-24 19:26:04 UTC
Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1901275]
Affects: fedora-all [bug 1901276]

Comment 4 Product Security DevOps Team 2020-11-24 23:35:02 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-2020-27765