Bug 1594339 – CVE-2018-12600 ImageMagick: out of bounds write ReadDIBImage and WriteDIBImage in coders/dib.c

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Bug 1594339 - (CVE-2018-12600) CVE-2018-12600 ImageMagick: out of bounds write ReadDIBImage and WriteDIBImage in coders/dib.c

Summary:	CVE-2018-12600 ImageMagick: out of bounds write ReadDIBImage and WriteDIBImag...

Status:	NEW

Aliases:	CVE-2018-12600

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

Priority	medium Severity medium
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Assigned To:	Red Hat Product Security
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Whiteboard:	impact=moderate,public=20180619,repor...
Keywords:	Security

Depends On:	1594421 1594423 1611557
Blocks:	1594340
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Reported:	2018-06-22 12:38 EDT by Laura Pardo
Modified:	2018-08-02 07:04 EDT (History)
CC List:	4 users (show)

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Description Laura Pardo 2018-06-22 12:38:52 EDT

A flaw was found in ImageMagick 7.0.8-3 Q16, ReadDIBImage and WriteDIBImage in coders/dib.c allow attackers to cause an out of bounds write via a crafted file.


References:
https://github.com/ImageMagick/ImageMagick/issues/1178

Patch:
https://github.com/ImageMagick/ImageMagick6/commit/ae71c12bbaa34d942e036824ff389c22b7dacade
https://github.com/ImageMagick/ImageMagick/commit/921f208c2ea3cc45847f380257f270ff424adfff

Comment 1 Laura Pardo 2018-06-22 17:34:59 EDT

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1594421]

Comment 4 Riccardo Schirone 2018-08-02 07:03:07 EDT

When writing a DIB file, ImageMagick incorrectly allocates the pixels array on the heap, using the wrong size. When converting a crafted image file to the DIB format, this flaw could be used to write beyond the limits, overwriting other data on the heap and causing a Denial of Service or other unspecified effects.

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