Bug 1487202 – CVE-2017-12944 libtiff: Mishandled memory allocation for short files in the TIFFReadDirEntryArray function

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Bug 1487202 - (CVE-2017-12944) CVE-2017-12944 libtiff: Mishandled memory allocation for short files in the TIFFReadDirEntryArray function

Summary:	CVE-2017-12944 libtiff: Mishandled memory allocation for short files in the T...

Status:	NEW

Aliases:	CVE-2017-12944

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=20170806,reported=2...
Keywords:	Security

Depends On:	1474372 1474373 1474374
Blocks:
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Reported:	2017-08-31 08:26 EDT by Andrej Nemec
Modified:	2017-08-31 08:27 EDT (History)
CC List:	4 users (show)

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Description Andrej Nemec 2017-08-31 08:26:56 EDT

The TIFFReadDirEntryArray function in tif_read.c in LibTIFF mishandles memory allocation for short files, which allows attackers to cause a denial of service (allocation failure and application crash) in the TIFFFetchStripThing function in tif_dirread.c during a tiff2pdf invocation.

Upstream issue:

http://bugzilla.maptools.org/show_bug.cgi?id=2725

Upstream patch:

https://github.com/vadz/libtiff/commit/dc02f9050311a90b3c0655147cee09bfa7081cfc

Comment 1 Andrej Nemec 2017-08-31 08:27:59 EDT

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1474373]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1474372]
Affects: fedora-all [bug 1474374]

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