Bug 1577311 – CVE-2018-10779 libtiff: heap-based buffer over-read in TIFFWriteScanline function in tif_write.c

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Bug 1577311 - (CVE-2018-10779) CVE-2018-10779 libtiff: heap-based buffer over-read in TIFFWriteScanline function in tif_write.c

Summary:	CVE-2018-10779 libtiff: heap-based buffer over-read in TIFFWriteScanline func...

Status:	NEW

Aliases:	CVE-2018-10779

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=20180507,reported=2...
Keywords:	Security

Depends On:	1577314 1577315 1577317 1577393 1598503 1577316
Blocks:	1577318
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Reported:	2018-05-11 13:09 EDT by Laura Pardo
Modified:	2018-07-10 15:32 EDT (History)
CC List:	5 users (show)

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Doc Text:	An integer overflow has been discovered in libtiff in TIFFSetupStrips:tif_write.c, which could lead to a heap-based buffer overflow in TIFFWriteScanline:tif_write.c. An attacker may use this vulnerability to corrupt memory or cause Denial of Service.
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Description Laura Pardo 2018-05-11 13:09:49 EDT

A flaw was found in LibTIFF 3.8.2 in TIFFWriteScanline function in tif_write.c. A heap-based buffer over-read, as demonstrated by bmp2tiff.


References:
http://bugzilla.maptools.org/show_bug.cgi?id=2788

Comment 1 Laura Pardo 2018-05-11 13:10:37 EDT

Created libtiff tracking bugs for this issue:

Affects: fedora-all [bug 1577316]


Created mingw-libtiff tracking bugs for this issue:

Affects: epel-7 [bug 1577314]
Affects: fedora-all [bug 1577315]

Comment 4 Riccardo Schirone 2018-07-05 12:02:30 EDT

An integer overflow when computing the size of `td->td_stripbytecount` in TIFFSetupStrips allocates a buffer smaller than what is necessary, thus leading to a heap-based buffer overflow in TIFFWriteScanline when accessing the array.

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