Bug 1489702 – CVE-2017-14173 ImageMagick: Integer overflow in the function ReadTXTImage()

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Bug 1489702 - (CVE-2017-14173) CVE-2017-14173 ImageMagick: Integer overflow in the function ReadTXTImage()

Summary:	CVE-2017-14173 ImageMagick: Integer overflow in the function ReadTXTImage()

Status:	NEW

Aliases:	CVE-2017-14173

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20170907,reported=2...
Keywords:	Security

Depends On:	1488981
Blocks:
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Reported:	2017-09-08 03:44 EDT by Andrej Nemec
Modified:	2017-09-08 03:48 EDT (History)
CC List:	5 users (show)

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Description Andrej Nemec 2017-09-08 03:44:53 EDT

In the function ReadTXTImage() in coders/txt.c in ImageMagick 7.0.6-10, an integer overflow might occur for the addition operation "GetQuantumRange(depth)+1" when "depth" is large, producing a smaller value than expected. As a result, an infinite loop would occur for a crafted TXT file that claims a very large "max_value" value.

Upstream issue:

https://github.com/ImageMagick/ImageMagick/issues/713

Upstream patch:

https://github.com/ImageMagick/ImageMagick/commit/48bcf7c39302cdf9b0d9202ad03bf1b95152c44d

Comment 1 Andrej Nemec 2017-09-08 03:48:30 EDT

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1488981]

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