Bug 1625429 (CVE-2018-16412)

Summary:	CVE-2018-16412 ImageMagick: heap-based buffer over-read in the ParseImageResourceBlocks function in coders/psd.c
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jhorak, mike, pahan, rschiron
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-09-18 12:56:11 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:	1625432
Bug Blocks:	1625433

Description Laura Pardo 2018-09-04 22:14:38 UTC

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 22:16:40 UTC

Created ImageMagick tracking bugs for this issue:

Affects: fedora-all [bug 1625432]

Comment 2 Riccardo Schirone 2018-09-18 12:01:05 UTC

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 12:10:31 UTC

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

Comment 4 Riccardo Schirone 2018-09-18 12:47:19 UTC

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 08:16:00 UTC

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