Bug 1441240 – CVE-2017-7592 libtiff: Left shift of unsigned char without a cast

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Bug 1441240 - (CVE-2017-7592) CVE-2017-7592 libtiff: Left shift of unsigned char without a cast

Summary:	CVE-2017-7592 libtiff: Left shift of unsigned char without a cast

Status:	CLOSED WONTFIX

Aliases:	CVE-2017-7592

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=20170111,reported=2...
Keywords:	Security

Depends On:	1438466 1438465 1441273
Blocks:
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Reported:	2017-04-11 09:30 EDT by Andrej Nemec
Modified:	2017-04-11 10:34 EDT (History)
CC List:	4 users (show)

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Last Closed:	2017-04-11 10:34:42 EDT
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Description Andrej Nemec 2017-04-11 09:30:21 EDT

The putagreytile function in tif_getimage.c in LibTIFF has a left-shift undefined behavior issue, which might allow attackers to cause a denial of service (application crash) via a crafted image. 

Upstream bug:

http://bugzilla.maptools.org/show_bug.cgi?id=2658

Upstream patch:

https://github.com/vadz/libtiff/commit/48780b4fcc425cddc4ef8ffdf536f96a0d1b313b

Comment 1 Andrej Nemec 2017-04-11 10:17:44 EDT

Created mingw-libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1438465]

Comment 2 Andrej Nemec 2017-04-11 10:22:04 EDT

Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1438466]

Comment 3 Andrej Nemec 2017-04-11 10:24:30 EDT

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1441273]

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