Bug 1898300 (CVE-2020-27775) - CVE-2020-27775 ImageMagick: outside the range of representable values of type 'unsigned char' at MagickCore/quantum.h
Summary: CVE-2020-27775 ImageMagick: outside the range of representable values of type...
Alias: CVE-2020-27775
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1901295 1901296 1910527
Blocks: 1891602
TreeView+ depends on / blocked
Reported: 2020-11-16 18:48 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-15 20:58 UTC (History)
7 users (show)

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/quantum.h. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of values outside the range of type unsigned char. This would most likely lead to an impact to application availability, but could potentially cause other problems related to undefined behavior.
Clone Of:
Last Closed: 2020-11-24 23:35:33 UTC

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-11-16 18:48:08 UTC
In ImageMagick, there is an outside the range of representable values of type 'unsigned char' at MagickCore/quantum.h.


Upstream patch:

Comment 1 Guilherme de Almeida Suckevicz 2020-11-16 18:48:11 UTC

Name: Suhwan Song (Seoul National University)

Comment 2 Todd Cullum 2020-11-16 21:25:08 UTC
This undefined behavior could be triggered by a crafted input file 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 demonstrated in this case.

Comment 3 Todd Cullum 2020-11-16 21:25:21 UTC

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 4 Guilherme de Almeida Suckevicz 2020-11-24 19:31:05 UTC
Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1901295]
Affects: fedora-all [bug 1901296]

Comment 5 Product Security DevOps Team 2020-11-24 23:35:33 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


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