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<HTML>
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<HEAD>
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<TITLE>
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Changes in TIFF v4.0.9
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</TITLE>
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</HEAD>
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<BODY BGCOLOR=white>
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<FONT FACE="Helvetica, Arial, Sans">
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<BASEFONT SIZE=4>
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<FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION
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<BASEFONT SIZE=3>
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Current Version: v4.0.9
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Previous Version: v4.0.8
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Master FTP Site:
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download.osgeo.org, directory pub/libtiff
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Master HTTP Site #1:
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http://www.simplesystems.org/libtiff/
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Master HTTP Site #2:
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http://libtiff.maptools.org/
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This document describes the changes made to the software between the
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previous and current versions (see above). If you don't
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find something listed here, then it was not done in this timeframe, or
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it was not considered important enough to be mentioned. The following
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information is located here:
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Major Changes
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Changes in the software configuration
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Changes in libtiff
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Changes in the tools
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Changes in the contrib area
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<FONT SIZE=+3>M</FONT>AJOR CHANGES:
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None
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<FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:
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test/Makefile.am: Add some tests for tiff2bw.
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* .appveyor.yml, .travis.yml, build/travis-ci: apply patches
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0001-ci-Travis-script-improvements.patch and
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0002-ci-Invoke-helper-script-via-shell.patch by Roger Leigh
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(sent to mailing list)
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.travis.yml, build/travis-ci: new files from
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0001-ci-Add-Travis-support-for-Linux-builds-with-Autoconf.patch by
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Roger Leigh (sent to mailing list on 2017-06-08)
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This patch adds support for the Travis-CI service.
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.appveyor.yml: new file from
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0002-ci-Add-AppVeyor-support.patch by Roger Leigh (sent to mailing
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list on 2017-06-08)
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This patch adds a .appveyor.yml file to the top-level. This allows
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one to opt in to having a branch built on Windows with Cygwin,
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MinGW and MSVC automatically when a branch is pushed to GitHub,
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GitLab, BitBucket or any other supported git hosting service.
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CMakeLists.txt, test/CMakeLists.txt, test/TiffTestCommon.cmake: apply
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patch 0001-cmake-Improve-Cygwin-and-MingGW-test-support.patch from Roger
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Leigh (sent to mailing list on 2017-06-08)
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This patch makes the CMake build system support running the tests
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with MinGW or Cygwin.
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test/tiffcp-lzw-compat.sh, test/images/quad-lzw-compat.tiff: new files
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to test old-style LZW decompression
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test/common.sh, Makefile.am, CMakeList.txt: updated with above
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test/Makefile.am: add missing reference to images/quad-lzw-compat.tiff
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to fix "make distcheck". Patch by Roger Leigh
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nmake.opt: support a DEBUG=1 option, so as to adjust OPTFLAGS and use
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/MDd runtime in debug mode.
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<FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:
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libtiff/tif_color.c: TIFFYCbCrToRGBInit(): stricter clamping to avoid
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int32 overflow in TIFFYCbCrtoRGB().
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1844
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Credit to OSS Fuzz
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libtiff/tif_getimage.c: initYCbCrConversion(): stricter validation for
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refBlackWhite coefficients values. To avoid invalid float->int32 conversion
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(when refBlackWhite[0] == 2147483648.f)
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1907
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Credit to OSS Fuzz
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libtiff/tif_dirinfo.c, tif_dirread.c: add _TIFFCheckFieldIsValidForCodec(),
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and use it in TIFFReadDirectory() so as to ignore fields whose tag is a
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codec-specified tag but this codec is not enabled. This avoids TIFFGetField()
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to behave differently depending on whether the codec is enabled or not, and
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thus can avoid stack based buffer overflows in a number of TIFF utilities
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such as tiffsplit, tiffcmp, thumbnail, etc.
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Patch derived from 0063-Handle-properly-CODEC-specific-tags.patch
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(http://bugzilla.maptools.org/show_bug.cgi?id=2580) by Raphaël Hertzog.
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Fixes:
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http://bugzilla.maptools.org/show_bug.cgi?id=2580
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http://bugzilla.maptools.org/show_bug.cgi?id=2693
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http://bugzilla.maptools.org/show_bug.cgi?id=2625 (CVE-2016-10095)
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http://bugzilla.maptools.org/show_bug.cgi?id=2564 (CVE-2015-7554)
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http://bugzilla.maptools.org/show_bug.cgi?id=2561 (CVE-2016-5318)
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http://bugzilla.maptools.org/show_bug.cgi?id=2499 (CVE-2014-8128)
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http://bugzilla.maptools.org/show_bug.cgi?id=2441
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http://bugzilla.maptools.org/show_bug.cgi?id=2433
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libtiff/tif_swab.c: if DISABLE_CHECK_TIFFSWABMACROS is defined, do not do
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the #ifdef TIFFSwabXXX checks. Make it easier for GDAL to rename the symbols
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of its internal libtiff copy.
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libtiff/tif_dirread.c: fix regression of libtiff 4.0.8 in
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ChopUpSingleUncompressedStrip() regarding update of newly single-strip
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uncompressed files whose bytecount is 0. Before the change of 2016-12-03,
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the condition bytecount==0 used to trigger an early exit/disabling of
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strip chop. Re-introduce that in update mode. Otherwise this cause
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later incorrect setting for the value of StripByCounts/StripOffsets.
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( https://trac.osgeo.org/gdal/ticket/6924 )
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libtiff/tif_dirread.c: TIFFFetchStripThing(): limit the number of items
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read in StripOffsets/StripByteCounts tags to the number of strips to avoid
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excessive memory allocation.
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2215
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Credit to OSS Fuzz
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libtiff/tif_getimage.c: avoid many (harmless) unsigned int overflows.
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libtiff/tif_fax3.c: avoid unsigned int overflow in Fax3Encode2DRow(). Could
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potentially be a bug with huge rows.
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libtiff/tif_jpeg.c: avoid (harmless) unsigned int overflow on tiled images.
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libtiff/tif_dirread.c: avoid unsigned int overflow in EstimateStripByteCounts()
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and BYTECOUNTLOOKSBAD when file is too short.
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libtiff/tif_predict.c: decorate legitimate functions where unsigned int
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overflow occur with TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
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* libtiff/tif_dirread.c: avoid unsigned int overflow in EstimateStripByteCounts()
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libtiff/tiffiop.h: add TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW macro to
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disable CLang warnings raised by -fsanitize=undefined,unsigned-integer-overflow
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libtiff/tif_jpeg.c: add anti-denial of service measure to avoid excessive
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CPU consumption on progressive JPEGs with a huge number of scans.
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See http://www.libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf
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Note: only affects libtiff since 2014-12-29 where support of non-baseline JPEG
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was added.
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libtiff/tif_jpeg.c: error out at decoding time if anticipated libjpeg
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memory allocation is above 100 MB. libjpeg in case of multiple scans,
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which is allowed even in baseline JPEG, if components are spread over several
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scans and not interleavedin a single one, needs to allocate memory (or
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backing store) for the whole strip/tile.
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See http://www.libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf
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This limitation may be overriden by setting the
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LIBTIFF_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, or recompiling
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libtiff with a custom value of TIFF_LIBJPEG_LARGEST_MEM_ALLOC macro.
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libtiff/tif_jbig.c: fix memory leak in error code path of JBIGDecode()
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Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2706
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Reported by team OWL337
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libtiff/tif_dirread.c: in TIFFReadDirEntryFloat(), check that a
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double value can fit in a float before casting. Patch by Nicolas RUFF
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libtiff/tiffiop.h, libtiff/tif_jpeg.c, libtiff/tif_jpeg_12.c,
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libtiff/tif_read.c: make TIFFReadScanline() works in
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CHUNKY_STRIP_READ_SUPPORT mode with JPEG stream with multiple scans.
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Also make configurable through a LIBTIFF_JPEG_MAX_ALLOWED_SCAN_NUMBER
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environment variable the maximum number of scans allowed. Defaults to
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100.
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libtiff/tif_read.c: TIFFFillTile(): add limitation to the number
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of bytes read in case td_stripbytecount[strip] is bigger than
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reasonable, so as to avoid excessive memory allocation (similarly to
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what was done for TIFFFileStrip() on 2017-05-10)
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libtiff/tif_getimage.c: use _TIFFReadEncodedStripAndAllocBuffer().
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Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2708 and
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https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2433 .
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Credit to OSS Fuzz
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libtiff/tif_read.c, tiffiop.h: add a _TIFFReadEncodedStripAndAllocBuffer()
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function, variant of TIFFReadEncodedStrip() that allocates the
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decoded buffer only after a first successful TIFFFillStrip(). This avoids
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excessive memory allocation on corrupted files.
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libtiff/tif_dirwrite.c: in TIFFWriteDirectoryTagCheckedXXXX()
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functions associated with LONG8/SLONG8 data type, replace assertion that
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the file is BigTIFF, by a non-fatal error.
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Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2712
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Reported by team OWL337
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libtiff/tif_read.c: TIFFStartTile(): set tif_rawcc to
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tif_rawdataloaded when it is set. Similarly to TIFFStartStrip().
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This issue was revealed by the change of 2017-06-30 in TIFFFileTile(),
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limiting the number of bytes read. But it could probably have been hit
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too in CHUNKY_STRIP_READ_SUPPORT mode previously ?
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2454
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Credit to OSS Fuzz
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libtiff/tif_error.c, tif_warning.c: correctly use va_list when both
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an old-style and new-style warning/error handlers are installed.
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Patch by Paavo Helde (sent on the mailing list)
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libtiff/tif_getimage.c: use _TIFFReadTileAndAllocBuffer().
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2470
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Credit to OSS Fuzz.
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libtiff/tif_read.c, tiffiop.h: add a _TIFFReadEncodedTileAndAllocBuffer()
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and _TIFFReadTileAndAllocBuffer() variants of TIFFReadEncodedTile() and
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TIFFReadTile() that allocates the decoded buffer only after a first
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successful TIFFFillTile(). This avoids excessive memory allocation
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on corrupted files.
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libtiff/tif_pixarlog.c: avoid excessive memory allocation on decoding
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when RowsPerStrip tag is not defined (and thus td_rowsperstrip == UINT_MAX)
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2554
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Credit to OSS Fuzz
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libtiff/tif_lzw.c: fix 4.0.8 regression in the decoding of old-style LZW
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compressed files.
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libtiff/tif_lzw.c: fix potential out-of-buffer read on 1-byte LZW
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strips. Crashing issue only on memory mapped files, where the strip
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offset is the last byte of the file, and the file size is a multiple
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of one page size on the CPU architecture (typically 4096). Credit
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to myself :-)
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libtiff/tif_dir.c: avoid potential null pointer dereference in
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_TIFFVGetField() on corrupted TIFFTAG_NUMBEROFINKS tag instance.
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Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2713
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tools/tiff2pdf.c: prevent heap buffer overflow write in "Raw"
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mode on PlanarConfig=Contig input images.
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Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2715
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Reported by team OWL337
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libtiff/tif_read.c: TIFFFillStrip() / TIFFFillTile().
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Complementary fix for http://bugzilla.maptools.org/show_bug.cgi?id=2708
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in the isMapped() case, so as to avoid excessive memory allocation
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when we need a temporary buffer but the file is truncated.
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libtiff/tif_read.c: TIFFFillStrip() / TIFFFillTile().
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Complementary fix for http://bugzilla.maptools.org/show_bug.cgi?id=2708
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in the isMapped() case, so as to avoid excessive memory allocation
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when we need a temporary buffer but the file is truncated.
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libtiff/tif_read.c: in TIFFFetchStripThing(), only grow the
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arrays that hold StripOffsets/StripByteCounts, when they are smaller
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than the expected number of striles, up to 1 million striles, and
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error out beyond. Can be tweaked by setting the environment variable
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LIBTIFF_STRILE_ARRAY_MAX_RESIZE_COUNT.
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This partially goes against a change added on 2002-12-17 to accept
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those arrays of wrong sizes, but is needed to avoid denial of services.
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Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2350
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Credit to OSS Fuzz
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85355f |
libtiff/tif_read.c: in TIFFFetchStripThing(), only grow the
|
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85355f |
arrays that hold StripOffsets/StripByteCounts, when they are smaller
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85355f |
than the expected number of striles, up to 1 million striles, and
|
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error out beyond. Can be tweaked by setting the environment variable
|
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LIBTIFF_STRILE_ARRAY_MAX_RESIZE_COUNT.
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This partially goes against a change added on 2002-12-17 to accept
|
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85355f |
those arrays of wrong sizes, but is needed to avoid denial of services.
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85355f |
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2350
|
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85355f |
Credit to OSS Fuzz
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85355f |
libtiff/tif_read.c: add protection against excessive memory
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85355f |
allocation attempts in TIFFReadDirEntryArray() on short files.
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85355f |
Effective for mmap'ed case. And non-mmap'ed case, but restricted
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85355f |
to 64bit builds.
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2675
|
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85355f |
libtiff/tif_read.c: add protection against excessive memory
|
|
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85355f |
allocation attempts in TIFFReadDirEntryArray() on short files.
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85355f |
Effective for mmap'ed case. And non-mmap'ed case, but restricted
|
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85355f |
to 64bit builds.
|
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Packit |
85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2675
|
|
Packit |
85355f |
libtiff/tif_luv.c: LogLuvInitState(): avoid excessive memory
|
|
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85355f |
allocation when RowsPerStrip tag is missing.
|
|
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85355f |
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2683
|
|
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85355f |
Credit to OSS-Fuzz
|
|
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85355f |
libtiff/tif_getimage.c: gtTileContig() and gtTileSeparate():
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85355f |
properly break from loops on error when stoponerr is set, instead
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|
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85355f |
of going on iterating on row based loop.
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85355f |
libtiff/tif_getimage.c: fix fromskew computation when to-be-skipped
|
|
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85355f |
pixel number is not a multiple of the horizontal subsampling, and
|
|
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85355f |
also in some other cases. Impact putcontig8bitYCbCr44tile,
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|
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85355f |
putcontig8bitYCbCr42tile, putcontig8bitYCbCr41tile,
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|
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85355f |
putcontig8bitYCbCr21tile and putcontig8bitYCbCr12tile
|
|
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2637 (discovered
|
|
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85355f |
by Agostino Sarubbo)
|
|
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and https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2691 (credit
|
|
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85355f |
to OSS Fuzz)
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85355f |
libtiff/tif_luv.c: further reduce memory requirements for temporary
|
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85355f |
buffer when RowsPerStrip >= image_length in LogLuvInitState() and
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85355f |
LogL16InitState().
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85355f |
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=2700
|
|
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85355f |
Credit to OSS Fuzz
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|
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85355f |
libtiff/tif_dirwrite.c: replace assertion related to not finding the
|
|
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85355f |
SubIFD tag by runtime check (in TIFFWriteDirectorySec())
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|
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2727
|
|
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85355f |
Reported by team OWL337
|
|
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85355f |
libtiff/tif_dirwrite.c: replace assertion to tag value not fitting
|
|
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85355f |
on uint32 when selecting the value of SubIFD tag by runtime check
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|
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85355f |
(in TIFFWriteDirectoryTagSubifd()).
|
|
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2728
|
|
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85355f |
Reported by team OWL337
|
|
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85355f |
libtiff/tif_jpeg.c: accept reading the last strip of a JPEG compressed
|
|
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85355f |
file if the codestream height is larger than the truncated height of the
|
|
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85355f |
strip. Emit a warning in this situation since this is non compliant.
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|
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85355f |
libtiff/tiffiop.h, tif_aux.c: redirect SeekOK() macro to a _TIFFSeekoK()
|
|
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85355f |
function that checks if the offset is not bigger than INT64_MAX, so as
|
|
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85355f |
to avoid a -1 error return code of TIFFSeekFile() to match a required
|
|
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85355f |
seek to UINT64_MAX/-1.
|
|
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2726
|
|
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85355f |
Adapted from proposal by Nicolas Ruff.
|
|
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85355f |
libtiff/tif_dirread.c: add NULL check to avoid likely false positive
|
|
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85355f |
null-pointer dereference warning by CLang Static Analyzer.
|
|
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85355f |
libtiff/libtiff.def: add TIFFReadRGBAStripExt and TIFFReadRGBATileExt
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|
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85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2735
|
|
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85355f |
libtiff/tif_jpeg.c: add compatibility with libjpeg-turbo 1.5.2 that
|
|
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85355f |
honours max_memory_to_use > 0.
|
|
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85355f |
Cf https://github.com/libjpeg-turbo/libjpeg-turbo/issues/162
|
|
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85355f |
libtiff/tif_getimage.c: avoid floating point division by zero in
|
|
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85355f |
initCIELabConversion()
|
|
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85355f |
Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=3733
|
|
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85355f |
Credit to OSS Fuzz
|
|
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85355f |
|
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85355f |
|
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85355f |
|
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|
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85355f |
|
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85355f |
|
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<FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:
|
|
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85355f |
|
|
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85355f |
|
|
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85355f |
|
|
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85355f |
tools/tiff2pdf.c: prevent heap buffer overflow write in "Raw"
|
|
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85355f |
mode on PlanarConfig=Contig input images.
|
|
Packit |
85355f |
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2715
|
|
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85355f |
Reported by team OWL337
|
|
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85355f |
tools/tiffset.c: fix setting a single value for the ExtraSamples tag
|
|
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85355f |
(and other tags with variable number of values).
|
|
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85355f |
So 'tiffset -s ExtraSamples 1 X'. This only worked
|
|
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85355f |
when setting 2 or more values, but not just one.
|
|
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85355f |
tools/fax2tiff.c (_FAX_Client_Data): Pass FAX_Client_Data as the
|
|
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85355f |
client data. This client data is not used at all at the moment,
|
|
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85355f |
but it makes the most sense. Issue that the value of
|
|
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85355f |
client_data.fd was passed where a pointer is expected was reported
|
|
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85355f |
via email by Gerald Schade on Sun, 29 Oct 2017.
|
|
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85355f |
tools/tiff2pdf.c (t2p_sample_realize_palette): Fix possible
|
|
Packit |
85355f |
arithmetic overflow in bounds checking code and eliminate
|
|
Packit |
85355f |
comparison between signed and unsigned type.
|
|
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85355f |
tools/tiff2bw.c (main): Free memory allocated in the tiff2bw
|
|
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85355f |
program. This is in response to the report associated with
|
|
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85355f |
CVE-2017-16232 but does not solve the extremely high memory usage
|
|
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85355f |
with the associated POC file.
|
|
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85355f |
|
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|
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|
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|
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|
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<FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:
|
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|
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|
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|
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None
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|
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Last updated $Date: 2017-11-18 19:38:06 $.
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</BODY>
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</HTML>
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