Bug 1891613 (CVE-2020-25667)

Summary:	CVE-2020-25667 ImageMagick: heap-based buffer overflow in TIFFGetProfiles in coders/tiff.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:	medium	Docs Contact:
Priority:	medium
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 7.0.9-0	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in TIFFGetProfiles() in /coders/tiff.c calls strstr(), which causes a large out-of-bounds read when it searches for `"dc:format=\"image/dng\"` within `profile` due to improper string handling when a crafted input file is provided to ImageMagick. The patch uses a StringInfo type instead of a raw C string to remedy this issue. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-11-24 23:34:05 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:	1901231, 1901232, 1910561
Bug Blocks:	1891602

Description Guilherme de Almeida Suckevicz 2020-10-26 20:28:26 UTC

ImageMagick 7.0.8-68 there is a heap-buffer-overflow at coders/tiff.c in TIFFGetProfiles.

Reference:
https://github.com/ImageMagick/ImageMagick/issues/1748

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/986b5dff173413fa712db27eb677cdef15f0bab6

Comment 1 Todd Cullum 2020-10-28 21:27:29 UTC

Flaw summary:

TIFFGetProfiles() in /coders/tiff.c calls strstr() which causes a large out-of-bounds read when it searches for `"dc:format=\"image/dng\"` within `profile` due to improper string handling, when a crafted input file is provided to ImageMagick. The patch uses a StringInfo type instead of a raw C string to remedy this. This could cause an impact to availability of the application.

Comment 2 Todd Cullum 2020-10-28 21:28:35 UTC

Acknowledgments:

Name: Suhwan Song (Seoul National University)

Comment 3 Todd Cullum 2020-10-29 19:13:04 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 4 Guilherme de Almeida Suckevicz 2020-11-24 19:02:44 UTC

Created ImageMagick tracking bugs for this issue:

Affects: epel-8 [bug 1901231]
Affects: fedora-all [bug 1901232]

Comment 5 Product Security DevOps Team 2020-11-24 23:34:05 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-2020-25667