Bug 1625429 – CVE-2018-16412 ImageMagick: heap-based buffer over-read in the ParseImageResourceBlocks function in coders/psd.c

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Bug 1625429 - (CVE-2018-16412) CVE-2018-16412 ImageMagick: heap-based buffer over-read in the ParseImageResourceBlocks function in coders/psd.c

Summary:	CVE-2018-16412 ImageMagick: heap-based buffer over-read in the ParseImageReso...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-16412

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

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
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Whiteboard:	impact=low,public=20180819,reported=2...
Keywords:	Security

Depends On:	1625432
Blocks:	1625433
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Reported:	2018-09-04 18:14 EDT by Laura Pardo
Modified:	2018-10-05 04:16 EDT (History)
CC List:	4 users (show)

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Last Closed:	2018-09-18 08:56:11 EDT
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Description Laura Pardo 2018-09-04 18:14:38 EDT

A flaw was found in ImageMagick 7.0.8-11 Q16 has a heap-based buffer over-read in the coders/psd.c ParseImageResourceBlocks function.


References:
https://github.com/ImageMagick/ImageMagick/issues/1250

Comment 1 Laura Pardo 2018-09-04 18:16:40 EDT

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1625432]

Comment 2 Riccardo Schirone 2018-09-18 08:01:05 EDT

Statement:

This issue did not affect the versions of ImageMagick as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable code.

Comment 3 Riccardo Schirone 2018-09-18 08:10:31 EDT

Upstream patch:
https://github.com/ImageMagick/ImageMagick6/commit/4745eb1047617330141e9abfd5ae01236a71ae12

Comment 4 Riccardo Schirone 2018-09-18 08:47:19 EDT

ParseImageResourceBlocks function in coders/psd.c does not check if the the read value plus the base `p` buffer may overflow. Thus a big `count` value can bypass the check and result in an out-of-bound read later on during the execution of the function.

Comment 6 Riccardo Schirone 2018-10-05 04:16:00 EDT

Upstream patch:
https://github.com/ImageMagick/ImageMagick/commit/17a1a6f97fd088a71931bdc422f4e96bb6ffc549

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