2017-12-09  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* www/index.rst: Update to 1.3.27.

	* www/Changes.rst: Add 1.3.27

	* version.sh: Update library versioning.

	* NEWS.txt: Update NEWS in preparation for releasing 1.3.27.

2017-12-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/dcm.c (DCM_ReadElement): Change size checks addressing
	CVE-2017-12140 to be based on size_t rather than magick_off_t due
	to apparent instability of the previous check across compilers.

2017-12-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (WriteOnePNGImage): Fix heap read access outside of
	allocated PixelPacket array while testing pixels for opacity.
	Resolves SourceForge issue #526 "heap-buffer-overflow in
	WriteOnePNGImage".

2017-12-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/pnm.c (WritePNMImage): Fix SourceForge bug #525
	"heap-buffer-overflow in MagickBitStreamMSBWrite".

2017-12-05  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/dcm.c (DCM_ReadElement): Eliminate huge memory allocation
	based on bogus length value. Addresses CVE-2017-12140. Problem was
	reported via email from Petr Gajdos on Tue, 5 Dec 2017.

2017-12-03  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* Magick++/lib/Image.cpp (colorMap): Try to eliminate Coverity CID
	172796 "Dereference after null check" which seems to be bogus.

	* coders/png.c (WriteOnePNGImage): Fix Coverity CID 168053
	"Dereference after null check".  The check for null and the error
	report which attempted to use the null value was not needed at
	all.

	* coders/cut.c (GetCutColors): Fix Coverity CID 10181: "Null
	pointer dereferences". SetImagePixels() may return NULL.

	* coders/rgb.c (ReadRGBImage): Fix SourceForge issue #523
	"heap-buffer-overflow".  Similar issue to cmyk.c.

	* coders/gray.c (ReadGRAYImage): Fix SourceForge issue #522
	"heap-buffer-overflow".  Similar issue to cmyk.c.

	* coders/cmyk.c (ReadCMYKImage): Fix SourceForge issue #521
	"heap-buffer-overflow". The requested tile must be within the
	bounds of the image.  As it happens, 'montage' passes size and
	tile information which is useless for reading a raw image so it is
	not possible to read raw CMYK using 'montage'.

2017-12-02  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/pwp.c (ReadPWPImage): Eliminate dereference of null image
	pointer.  Addresses CVE-2017-11640.  Also address access to
	uninitialized memory.  Problem was reported via email from Petr
	Gajdos on Wed, 29 Nov 2017.

2017-11-22  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/wpg.c Additional check for wrong bpp CVE-2017-14342.


2017-11-22  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* Magick++/lib/Image.cpp (autoOrient): Add method to auto-orient
	an image so it looks right-side up by default.  Based on patch by
	Przemysław Sobala submitted as SourceForge patch #53 "Add
	Magick::Image::autoOrient() method to Magick++ library".

	* www/download.rst: Change "Czechoslovakian ftp mirror" to "Czech
	ftp mirror".  Resolves SourceForge bug #520 "[web] Download sites:
	non-existent country".

2017-11-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/wpg.c (ReadWPGImage): Fix excessive use of disk resources
	due to unreasonable record length.  Addresses CVE-2017-14341.
	Notified of this issue (with suggested patch) via email by Petr
	Gajdos on Tue, 21 Nov 2017.

2017-11-19  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* README.txt: Comprehensive white-space clean-up across
	GraphicsMagick core source files.  Hard TAB character is converted
	to spaces.  Trailing white-space garbage is stripped.

	* magick/colormap.c (MagickConstrainColormapIndex): Deprecate use
	of MagickConstrainColormapIndex() and prefer use of
	VerifyColormapIndex() and VerifyColormapIndexWithColors() due to
	avoiding dependence on index type, allowing provision of colors
	other than image->colors, and capturing more useful source file
	and line information.

	* coders/{rle.c, mat.c, xbm.c, sgi.c, png.c}: Eliminate size_t vs
	unsigned 32 conversion warnings in WIN64 build.

2017-11-18  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* tiff: Import libtiff 4.0.9.

2017-11-12  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/bmp.c (DecodeImage): "Right-size" and "Right-type"
	DecodeImage() variables and check for EOF at every point of the
	way.  Pass buffer size as an argument.

	* coders/dib.c (DecodeImage): "Right-size" and "Right-type"
	DecodeImage() variables and check for EOF at every point of the
	way.  Pass buffer size as an argument.

	* coders/bmp.c (_BMPInfo): "Right-size" BMPInfo members.  The
	'long' type is promoted to 64-bit on LP64 systems and the large
	size is not needed.

2017-11-11  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/webp.c: Incorporate patch by Jan Spitalnik to add EXIF
	and ICC metadata support to the WebP coder.  While WebP is still
	supported back to libwebp 0.1.99, the metadata support requires at
	least libwebp 0.5.0.  Resolves SourceForge patch #52 "Add EXIF/ICC
	metadata support to WebP coder".

	* coders/png.c (ReadOneJNGImage): Fix JNG memory leaks when JPEG
	image fails to be read.
	(WriteOnePNGImage): Promotion of indexed PNG to RGBA lacked
	setting of image matte, resulting in undersized buffer allocation
	and heap overflow.  Fixes SourceForge bug #453 "Heap overflow in
	source-gra/coders/png.c".

2017-11-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/sfw.c (SFWScan): Fix heap buffer overflow
	(CVE-2017-13134).  Notified of problem via email (including a
	patch) from Petr Gajdos on Mon, 6 Nov 2017.

2017-11-05  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/wpg.c Wrong MaxMap check condition - fixed.

2017-11-04  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/wpg.c Check for InsertRow() return value.

2017-11-04  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/export.c: Add not-null check for indexes pointer where
	needed.

	* magick/import.c: Add not-null check for indexes pointer with
	associated exception report where the indexes pointer is needed.
	(ImportCMYKQuantumType): Was wrongly importing an opacity channel
	in some cases. Would have crashed if these cases were ever used.

	* coders/wpg.c (ReadWPGImage): Assure that colormapped image is a
	PseudoClass type with valid colormapped indexes.  Fixes
	SourceForge bug 519 "Null Pointer Dereference (Write) with
	malformed WPG Image".

	* coders/sfw.c (ReadSFWImage): Avoid possible heap overflow while
	copying JFIF magic into buffer. Reject runt files.  Fixes
	CVE-2017-12983.  Notified of problem via email from Petr Gajdos on
	Thu, 2 Nov 2017.

2017-10-28  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/render.c (DrawImage): Fix SourceForge bug #517 "Push
	operations in DrawImage can lead to negative strncpy when looking
	for pop".  Interestingly, valgrind and ASAN only detected a
	problem with one of the test cases since exercised code which
	updated an array using the index.  It appears that Linux strncpy()
	simply ignores the bad request.

2017-10-27  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Make sure that a reasonable
	exception is reported to the user when there is a read failure.

2017-10-26  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Reject JNG files with
	unreasonable dimensions given the file size.

2017-10-25  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Fix SourceForge bug #518 "Null
	pointer in".  Also make sure that errors are reported properly due
	to problems with transferring JPEG scanlines.
	(ReadOneJNGImage): Add more checks for null value returned from
	SetImagePixels().

2017-10-22  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/describe.c (DescribeImage): Fix possible heap read
	overflow while accessing heap data, and possible information
	disclosure while describing the IPTC profile.  Report was provided
	via email from Maor Shwartz to the graphicsmagick-security mail
	alias on Thu, 19 Oct 2017.  Independent security researchers,
	Jeremy Heng (@nn_amon) and Terry Chia (Ayrx), reported this
	vulnerability to Beyond Security’s SecuriTeam Secure Disclosure
	program. Please note that this interface is usually (but not
	exclusively) used from within the command-line utility program, in
	which case there is not much useful information which might be
	disclosed.
	(DescribeImage): Fix possible heap write overflow when describing
	visual image directory.  Report was provided via email from Maor
	Shwartz to the graphicsmagick-security mail alias on Thu, 19 Oct
	2017.  Independent security researchers, Jeremy Heng (@nn_amon)
	and Terry Chia (Ayrx), reported this vulnerability to Beyond
	Security’s SecuriTeam Secure Disclosure program. Please note that
	this interface is usually (but not exclusively) used from within
	the command-line utility program, in which case the only harm
	would be a program crash.

	* magick/constitute.c (WriteImage): Assure that the errno present
	when the blob error status first occured is reported to the user.

	* magick/blob.c (GetBlobStatus): Blob error status is now updated
	immediately upon the first error reported.
	(GetBlobFirstErrno): Returns errno value when the first blob error
	was reported.  This is useful for error reporting.

2017-10-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/constitute.c (WriteImage): Restore use of GetBlobStatus()
	to test if an I/O error was encountered while writing output file.
	This assures that I/O failure in writers which do not themselves
	verify writes is assured to be reported.

2017-10-17  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/webp.c (WriterCallback): WebP writer now detects partial
	write to output file.  Patch by Przemysław Sobala from a posting
	on Mon, 16 Oct 2017 via the graphicsmagick-help mailing list.

2017-10-14  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/command.c (MontageImageCommand): Fix memory leaks in
	error return path.  Only people doing leak testing or the few who
	execute MontageImageCommand() as a function will care about this.

	* magick/studio.h (NumberOfObjectsInArray): The
	NumberOfObjectsInArray() macro is used to compute the number of
	whole objects in an array.  Instead it was rounding up, resulting
	in scrambling the heap beyond the allocation.  Fixes
	CVE-2017-13737 "There is an invalid free in the MagickFree
	function in magick/memory.c in GraphicsMagick 1.3.26 that will
	lead to a remote denial of service attack."

2017-10-09  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOnePNGImage): Suppress "comparison between
	signed and unsigned integer expressions" warning.
	* coders/png.c (ReadJNGImage): Fix memory leak in SourceForge
	Issue #469 "use after free in ReadJNGImage".
	* coders/png.c (ReadJNGImage): Fix memory leak in SourceForge
	Issue #470 "Assert failure in writeblob".

2017-10-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* doc/options.imdoc: Fix SourceForge issue #444 "gm mogrify: Wrong
	documentation for option -output-directory".

2017-10-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/module.c (InitializeModuleSearchPath): Verify that any
	component paths specified in MAGICK_CODER_MODULE_PATH and
	MAGICK_FILTER_MODULE_PATH exist before adding them to search paths
	actually used, and convert to real paths if possible.  This avoids
	possible use of relative paths to load modules (a possible
	security issue) and may improve efficiency by removing
	non-existent paths.

	* coders/yuv.c (ReadYUVImage): Fix leak of scanline upon Image
	allocation failure.  Patch submitted by Petr Gajdos via email on
	Fri, 6 Oct 2017.

2017-09-13  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Attempt to fix SourceForge Issue #469 "use after
	free in ReadJNGImage".  Note that this change was found to replace
	a use after free with a memory leak so the problem is not solved
	yet.

2017-10-03  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/dcm.c (DCM_ReadNonNativeImages): Additional fix
	(improvement) for SourceForge issue #512 "NULL Pointer Dereference
	in DICOM Decoder".

2017-10-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/dcm.c (ReadDCMImage): Fix SourceForge issue #512 "NULL
	Pointer Dereference in DICOM Decoder".

	* coders/pict.c (ReadPICTImage): Fix SourceForge issue #511
	"Memory Allocation error due to malformed image file".

	* coders/pnm.c (WritePNMImage): Fix SourceForge issue #503 "memory
	leak in WritePNMImage".

	* coders/png.c (ReadMNGImage): Fix SourceForge issue #501 "memory
	leak in ReadMNGImage".

	* magick/segment.c (InitializeIntervalTree): Fix SourceForge issue
	#507 "null pointer in segment.c" and issue #508 "null pointer in
	segment.c".

	* coders/topol.c (ReadTOPOLImage): Fix SourceForge issue #510
	"null pointer and meory leak in topol.c".

	* magick/widget.c (MagickXFileBrowserWidget): Fix SourceForge
	issue #506 "null pointer in widget.c".

	* coders/tiff.c (WriteTIFFImage): Fix SourceForge issue #509
	"Memory leak in tiff.c".

	* magick/module.c (FindMagickModule): Fix SourceForge issue #502
	"null pointer in module.c".

	* coders/avs.c (ReadAVSImage): Fix Coverity CID 184115 "Control
	flow issues (DEADCODE)".

2017-09-30  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/avs.c (ReadAVSImage): Fix SourceForge issue #499 "memory
	leak in avs.c".

	* coders/cmyk.c (ReadCMYKImage): Fix SourceForge issue #498
	"memory leak in cmyk.c".

	* coders/cut.c (ReadCUTImage): Fix SourceForge issue #497 "memory
	leak in cut.c".

	* coders/dpx.c (ReadDPXImage): Fix SourceForge issue #496 "memory
	leak in dpx.c".

	* coders/hdf.c (ReadHDFImage): Fix SourceForge issue #495 "memory
	leak in hdf.c".

	* coders/pcx.c (ReadPCXImage): Fix SourceForge issue #494 "memory
	leak in pcx.c".

	* coders/pcd.c (ReadPCDImage): Fix SourceForge issue #493 "memory
	leak in ReadPCDImage".

	* coders/histogram.c (WriteHISTOGRAMImage): Fix SourceForge issue
	#492 "memory leak in WriteHISTOGRAMImage".

	* coders/gif.c (WriteGIFImage): Fix SourceForge issue #491 "memory
	leak in WriteGIFImage".

	* coders/fits.c (WriteFITSImage): Fix SourceForge issue #490
	"memory leak in WriteFITSImage".

	* coders/palm.c (WritePALMImage): Fix SourceForge issue #489
	"memory leak in WritePALMImage".

	* coders/rgb.c (ReadRGBImage): Fix SourceForge issue #488 "Memory
	leak in rgb.c".

	* coders/palm.c (ReadPALMImage): Fix SourceForge issue #487 "NULL
	pointer dereference in ReadPALMImage".

	* Magick++/lib/Options.cpp (strokeDashArray): Fix SourceForge
	issue #486 "NULL pointer dereference in
	Magick::Options::strokeDashArray".

	* magick/nt_feature.c (NTGetTypeList): Fix SourceForge issue #485
	"NULL pointer dereference in NTGetTypeList".

	* coders/sun.c (ReadSUNImage): Fix SourceForge issue #484 "Memory
	leak in sun.c".

	* coders/tim.c (ReadTIMImage): Fix SourceForge issue #483 "Memory
	leak in tim.c".

	* magick/nt_base.c (NTRegistryKeyLookup): Fix SourceForge issue
	#482 "NULL pointer dereference in NTRegistryKeyLookup".

	* coders/viff.c (ReadVIFFImage): Fix SourceForge issue #481
	"Memory leak in viff.c".

	* magick/profile.c (SetImageProfile): Fix SourceForge issue #480
	"assertion failure in MagickMapAllocateMap".

	* coders/yuv.c (ReadYUVImage): Fix SourceForge issue #478 "Memory
	leak in yuv.c".

	* magick/map.c (MagickMapCloneMap): Fix SourceForge issue #477
	"assertion failure in MagickMapIterateNext".

	* coders/emf.c (ReadEnhMetaFile): Fix SourceForge issue #475 "NULL
	pointer dereference in ReadEnhMetaFile".

	* coders/cineon.c (ReadCINEONImage): Fix SourceForge issue #473
	"NULL pointer dereference in ReadCINEONImage"

	* coders/tiff.c (TIFFIgnoreTags): Fix SourceForge issue #476 "NULL
	Pointer in tiff.c".

2017-09-25  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/blob.c (GetConfigureBlob): Fix SourceForge issue #472
	"NULL Pointer in GetConfigureBlob".

2017-09-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/rle.c (ReadRLEImage): Fix SourceForge issue #458 "Heap
	out of bounds read in ReadRLEImage()".

2017-09-19  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/sgi.c (ReadSGIImage): Check for EOF while reading SGI
	file header.  Issue was brought to our attention by Petr Gajdos
	via email on Fri, 1 Sep 2017.

2017-09-17  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/tiff.c (ReadTIFFImage): Allow a single scanline, strip,
	tile, to be 1000X larger than the input file in order to not cause
	problems for extremely compressible images or tile sizes much
	larger than the pixel dimensions.

2017-09-16  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/symbols.h, wand/wand_symbols.h: Update C library symbols
	which should be prefixed with 'Gm'. However, GM will not move
	Magick++ namespace because of the ImageMagick version.  Resolves
	SourceForge issue #468 "--enable-symbol-prefix does not prevent
	clashes with libMagick++ or libMagickWand?"

	* coders/png.c (DestroyJNG): DestroyJNG should be a static
	function.  Was wrongly exposed as DestroyJNGInfo in 1.3.26.  This
	is not a public function and was not intended to be part of the
	ABI.

	* coders/tiff.c (ReadTIFFImage): Limit scanline, strip, and tile
	memory allocations based on file size multiplied by a maximum
	compression ratio.  Fixes SourceForge issues #460, #461, #462,
	#463, #464 "allocation failure in ReadTIFFImage".

	* coders/pnm.c (ReadPNMImage): Require that XV 332 format have 256
	colors.  Fixes SourceForge issue #465 "NULL Pointer Dereference
	triggered by malformed file".  In our own testing the test case
	produced an assertion failure because assertions were enabled.

	* magick/colormap.c (AllocateImageColormap): Use unsigned array
	index.

2017-09-14  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/mat.c (ReadMATImage): Fix CVE-2016-10070, which is a heap
	overflow in the MAT reader due to an under-sized memory
	allocation.  Based on private email from Petr Gajdos on Mon, 11
	Sep 2017.

2017-09-13  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Check MemoryResource before allocating
	ping_pixel array.

2017-09-11  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* magick/shear.c: Possible evil loop might waste CPU for long time
        without any reason.

2017-09-10  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/render.c (DrawImage): Fix SourceForge issue #448 "Heap
	out of bounds read in DrawDashPolygon()".  Problem was reported by
	Kamil Frankowicz on August 28, 2017.

	* coders/uil.c (WriteUILImage): Fix crash in UIL writer when
	writing image containing transparency.  Issue was reported by
	LCatro via email on 18 Jul 2017.

	* coders/wpg.c (InsertRow): Fix crash which occurs if image is not
	PseudoClass but a PseudoColor scanline is needed.  Resolves
	SourceForge issue #449 "Null pointer dereference in InsertRow()".

	* coders/rle.c (ReadRLEImage): Impose image dimension limits
	according to Utah RLE specification. Cap number of planes handled
	internally at 4.  Remove non-standard multi-frame extension, which
	did not work anyway.

2017-09-09  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadJNGImage): Complete fixing CVE-2017-8350 crash
	while reading a malformed JNG file.

	* coders/{html.c, map.c, plasma.c, png.c, psd.c, rle.c, stegano.c,
	uil.c}: Downgrade claimed coder stability level for HTML, SHTML,
	MAP, FRACTAL, PLASMA, JNG, MNG, RLE, STEGANO, and UIL formats.

2017-09-08  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadJNGImage): More efforts toward fixing
	CVE-2017-8350 while reading a malformed JNG file.

2017-09-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/error.c (ThrowLoggedException): Capture the first
	exception at ErrorException level or greater, or only capture
	exception if it is more severe than an already reported exception.
	This should help lead to better error reports since the first
	error is usually the most significant.

	* coders/png.c (ReadJNGImage): Add "improper header" exception
	reporting.

2017-09-01  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadJNGImage): Efforts toward fixing CVE-2017-8350
	while reading a malformed JNG file.

2017-08-30  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/wpg.c (ReadWPGImage): Patch submitted by Petr Gajdos to
	check that .Width and .Height are greater than zero before they
	are assigned to image->columns and image->rows respectively
	(CVE-2014-9815).
	(ReadWPGImage): Do more validations on WPG_Palette.StartIndex and
	WPG_Palette.NumOfEntries.

2017-08-29  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Fix for SourceForge issue #440
	"use-after-free in CloseBlob (blob.c) (INCOMPLETE FIX FOR
	CVE-2017-11403)" and SourceForge issue #438 "heap use after free
	in CloseBlob".
	* coders/png.c (ReadOneJNGImage): Fix for SourceForge issue #439
	"assertion failure in magick/pixel_cache.c"

2017-08-27  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/mpeg.c (WriteMPEGImage): Fix MPEG writer memory leak.
	Only the first image in the coalesce image list was being freed.
	Problem was reported by LCatro via email on July 15, 2017.

	* magick/attribute.c (TracePSClippingPath, TraceSVGClippingPath):
	Fix SourceForge bug #447 "Heap out of bounds read in
	ReadMSBShort()".

2017-08-26  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/xbm.c (ReadXBMImage): Fix two denial of service (DOS)
	issues in ReadXBMImage() which result in the reader not
	returning. Problem was reported via email on Wed Aug 23 2017 by
	Xiaohei and Wangchu from Alibaba Security Team.

	* coders/jnx.c (ReadJNXImage): Fix denial of service (DOS) issue
	in ReadJNXImage() whereby large amounts of CPU and memory
	resources may be consumed although the file itself does not
	support the requests.  Problem was reported via email on Wed Aug
	23 2017 by Xiaohei and Wangchu from Alibaba Security Team.

2017-08-14  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOneMNGImage): Deal with invalid (too large)
	length of MNG chunks (bug #446).

2017-08-20  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/pnm.c (ReadPNMImage): Verify that sufficient file data
	exists to support what the file header requires before allocating
	memory for it.  Fixes problem reported by Agostino Sarubbo via
	email on Wed, 12 Jul 2017 and reported yet again via SourceForge
	bug #441 "memory allocation failure in MagickRealloc".

2017-08-20  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/mat.c: Fix SourceForge bug #433 "memory leak in
	ReadMATImage".  Credit for discovering and reporting the problem
	is "ADLab of Venustech".

	* coders/sun.c (ReadSUNImage): Fix failure to allocate memory due
	to inadequate file data to support claimed image width and height.
	First notified by email from Agostino Sarubbo on 14 Jul 2017 and
	then again as SourceForge bug #442 "memory allocation failure in
	magickmalloc".

2017-08-16  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/svg.c (GetStyleTokens): Fix SourceForge bugs 434 "heap
	buffer overflow in GetStyleTokens", 435 "null pointer
	dereference_in_SVGStartElement", and 436 "heap buffer overflow in
	GetStyleTokens" which all originated from a heap buffer overflow
	in GetStyleStokens(), or inconsistent initialization.  Now the
	implementation truncates parsing for poorly-formed input (to avoid
	buffer overflow) while still correctly parsing well-formed input.
	The reproducers and problem reports are attributed to "ADLab of
	Venustech".

2017-08-14  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Fixed double-free after
	reading a malformed JNG (Issue #438).

2017-08-14  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/pcd.c (ReadPCDImage): Fix memory leak on return path due
	to corrupted header.  Patch included in email on 14 Aug 2017 by
	Petr Gajdos (ImageMagick CVE CVE-2017-8351).

2017-08-11  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/gif.c (ReadGIFImage): Assure that global colormap is
	initialized.

	* coders/pict.c (ReadPICTImage): Fix memory leaks in error return
	path.  ImageMagick CVE CVE-2017-8353.  Patch by Petr Gajdos.

2017-08-11  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* tests/rwblob.c and rwfile.c: Write the reason for FAIL in
	test-suite.log.
	* magick/image.h: Revised table of image orientations to show
	Exif ImageOrientation values (which happen to be the same as
	the enum values 1 to 8).
	* coders/png.c: ReadJNGIMage(): fix memory leak (Issue 431).

2017-08-09  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/mtv.c (ReadMTVImage): Fix memory leak in error return
	path upon unexpected EOF (ImageMagick CVE-2017-9142).  Problem was
	brought to our attention via email from Petr Gajdos on Wed, 9 Aug
	2017.  Also changed pixel cache access functions used to assure
	delivery of exception to the user.

2017-08-05  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* configure.ac (SETJMP_IS_THREAD_SAFE): Decide if setjmp/longjmp
	are thread safe based on host OS.  Assume that these interfaces
	are thread safe by default.  Declared not to be thread safe under
	Solaris.  Declaring these interfaces to be thread safe increases
	available concurrency for coders which use setjmp/longjmp for
	error recovery (e.g. PNG and JPEG).

2017-08-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/jpeg.c (RegisterJPEGImage): Add support for the
	SETJMP_IS_THREAD_SAFE preprocessor definition (already used by
	coders/png.c) to indicate if setjmp/longjmp are thread safe on
	this platform and that it is safe for multiple encoders/decoders
	to be active at one time.

2017-07-31  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/sun.c: Fix heap read overflow while indexing into
	colormap. Problem was reported via email on 17 Jul 2017 by
	Agostino Sarubbo.

2017-07-31  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadMNGImage): Stop a leak when rejecting a
	MNG image with dimensions that are too large.

2017-07-26  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/wmf.c (ReadWMFImage): Eliminate use of already freed heap
	data in error reporting path.  Problem was reported via email by
	Agostino Sarubbo on Fri, 14 Jul 2017

2017-07-25  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadMNGImage) Free chunk allocation that remains
	after attempting to read a truncated file.
	* coders/png.c: Removed some redundant checks for chunk length
	before MagickFreeMemory(chunk), which is safe to call with a
	NULL argument.
	* coders/png.c: Fixed writer bug due to missing brackets; a Log
	statement should have been inside the "i" loop but instead was
	using i++ left over from the loop.  Bug report by L. Catro.
	* coders/png.c: Reject a MNG with dimensions greater than 65k
	by 65k.
	* coders/png.c (WriteOnePNGImage): Return without crashing if
	WriteOnePNGImage is passed a NULL image. Fixes CVE-2017-11522.

2017-07-22  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/pcl.c (WritePCLImage): Fix null pointer dereference in
	PCL writer when writing monochrome images.  Problem was reported
	by LCatro via email on July 18.

	* magick/pixel_cache.c (PersistCache): Fix memory leak while
	writing a MPC file.  Problem was reported by LCatro via email on
	July 18.

	* coders/map.c (WriteMAPImage): Fix null pointer dereference or
	segmentation violation in the MAP writer if the input image is not
	already colormapped.  Problem was reported by LCatro via email on
	July 18.

	* coders/gray.c (WriteGRAYImage): Improve tracing and tidy up.

	* coders/rgb.c (WriteRGBImage): Fix heap overwrite in raw RGB
	writer (all output subformats) given a multiframe sequence using
	different widths.  Problem was reported by LCatro via email on
	July 18.

	* coders/cmyk.c (WriteCMYKImage): Fix heap overwrite in raw CMYK
	writer (all output subformats) given a multiframe sequence using
	different widths.  Also fix wrong output of CMYKA (and vice-versa)
	when CMYK was intended.  Problem was reported by LCatro via email
	on July 18.

	* coders/palm.c: Disable the PALM writer since the writer is a
	work in progress and still has implementation problems.  Perhaps
	no one in the world remains who cares about the undocumented PALM
	format.  Resolves heap overflow and assertion issues reported by
	LCatro via emails on July 11th, and 12th, 2017.

	* magick/colormap.c (ReplaceImageColormap): Throw an exception
	rather than assertion if the input image is not colormapped.

2017-07-13  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Implemented eXIf chunk support.

2017-07-12  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Fix typecast of left shifts (patch by Bob F)

2017-07-12  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/ps.c (ReadPSImage): Fix reference to constant NULL image
	argument which is dereferenced to pass an exception to
	MagickMonitorFormatted().  Problem was reported by Agostino
	Sarubbo via email on Wed, 12 Jul 2017.

2017-07-10  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/blob.c: Add casts to fix undefined behavior in left
	shifts.  Issue was reported by Agostino Sarubbo via email on Mon,
	10 Jul 2017.

2017-07-10  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Ignore out-of-bounds MOVE
	and CLIP object_id's.
	* coders/png.c (ReadMNGImage): Fix apparent off-by-one error
	in MNG FRAM change_clipping processing.
	* coders/png.c (ReadMNGImage): Fix out-of-order CloseBlob()
	and DestroyImageList() that caused a use-after-free crash.
	Fixes CVE-2017-11403.  This bug was discovered by Agostino Sarubbo.

2017-07-08  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (ReadOneJngImage): Revised double-free fix.

2017-07-08  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Fix double-frees caused by
	commit on 2017-07-06.

	* coders/jpeg.c (ReadJPEGImage): Defer creating pixel cache until
	after successfully reading first scanline.  Classify some serious
	libjpeg reported "warnings" as errors and quit processing
	scanlines immediately upon first error so that corrupt JPEG does
	not consume excessive resources.  Resolves excessive resource
	consumption issue reported for two JPEG files provided via email
	by LCatro on Tue, 4 Jul 2017.

2017-07-06  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c (ReadOneJNGImage): Remove spurious '\n' from log
	statement.

2017-07-06  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Consolidate JNG cleanup into a new DestroyJNG()
	function.

2017-07-05  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: prevent a crash due to zero-length color_image
	while reading a JNG image. (CVE-2017-11102)

2017-07-04  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* NEWS.txt: Make sure is up to date.

	* www/index.rst: Update for 1.3.26 release.

	* version.sh: Update library versioning for 1.3.26 release.

	* magick/command.c (BatchCommand): Add ferror() checks around
	batch input loop.

2017-07-03  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Reject a PNG file if the file size is too small
	(less than 61 bytes).  Reject a JNG file if it is too small (less
	than 147 bytes).
	* coders/jpeg.c: Reject a JPEG file if the file size is too small
	(less than 107 bytes).

2017-07-02  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/dpx.c (ReadDPXImage): Compute required file size and
	verify that sufficient data exists in file before allocating
	memory to decode the image data.  Resolves problem with DPX file
	with valid header (but a huge claimed image width) provided
	provided via email on Thu, 29 Jun 2017 by LCatro.  This issue has
	been assigned CVE-2017-10799.

2016-07-02  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/mat.c Check whether reported object size overflows file size.

2016-07-01  Fojtik Jaroslav  <JaFojtik@seznam.cz>

	* coders/mat.c Safety check for forged and or corrupted data.
	This issue has been assigned CVE-2017-10800.

2017-07-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/tiff.c ("QuantumTransferMode"): Use a generalized method
	to enforce that buffer overflow can not happen while importing
	pixels.  Resolves problem with RGB TIFF claiming only one sample
	per pixel provided via email on Thu, 29 Jun 2017 by LCatro.  This
	issue has been assigned CVE-2017-10794.

2017-06-29  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/command.c: Convert bare 'unsigned int' to MagickPassFail
	where suitable to make intentions clear.  Convert True/False to
	MagickTrue/MagickFalse or MagickPass/MagickFail according to
	purpose.  This is a continuation of a gradual migration and does
	not represent an API change.

2017-06-25  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Avoid NULL dereference when MAGN chunk processing
	fails (https://sourceforge.net/p/graphicsmagick/bugs/426/). Expand
	TABs.

2017-06-25  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* NEWS.txt: Update NEWS with changes since the previous release.

	* www/programming.rst: Switch the Lua link to
	https://github.com/arcapos/luagraphicsmagick, which is a more
	complete and direct interface from Lua to GraphicsMagick's Wand
	API.

2017-06-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* VisualMagick/installer/gm-foo-dll.iss: Remove PerlMagick from
	the slim Inno Setup installer builder and remove mention of
	PerlMagick from the installer documentation.

	* TclMagick/generic/TclMagick.c (magickCmd): Resolve SourceForge
	patch #51 "TclMagick: memory access error; possible segfault".
	(newMagickObj): Fix formatting of pointer value so it is 64-bit
	safe.  Resolves SourceForge patch #50 "TclMagick: 64-bit
	portability issue".

	* coders/pict.c (ReadPICTImage): Avoid possible use of negative
	value when indexing array, which would cause buffer overflow.
	Resolves SourceForge issue #427 "One possible buffer overflow
	vulnerability in
	GraphicsMagick-1.3.25/coders/pict.c:ReadPICTImage()".

2017-06-22  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Stop memory leak when reading invalid JNG image.
	Fixes CVE-2017-8350.

2017-06-18  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/png.c: Fix lcms2.h inclusion logic.

	* wand/magick_wand.c (MagickSetImageOrientation): Eliminate use of
	snprintf, which is not supported by older Visual Studio.

2017-06-09  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Accept exIf chunks whose data segment
	erroneously begins with "Exif\0\0".

2017-06-01  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Removed experimental zxIF chunk support.  That
	proposal is dead.

2017-05-27  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* config/log.mgk: Added documentation suggested by SourceForge
	issue #419 "Consider a small patch to log.mgk".

	* www/Changes.rst: Add missing link to most recent changes.

2017-05-24  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* www/Magick++/Image.rst: Improve documentation for Magick++
	Image::iccColorProfile() and Image::renderingIntent().

2017-05-21  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* tiff: Update to libtiff 4.0.8.

2017-03-19  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Quieted a new Coverity complaint about a potential
	text buffer overrun.

2017-03-19  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/image.c (SetImageInfo): Ignore empty magic prefix
	specification and do not remove colon character from start of
	filename.  Resolves SourceForge bug #415 "Inconsistent Behavior w/
	input_file Parameter".

2017-03-18  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Added new private orNT PNG chunk, to
	preserve image->orientation when it is defined and not
	the default TopLeft.
	* coders/jpeg.c: Mention image->orientation in the log when
	writing a JPEG.

2017-03-15  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c (WriteOnePNGImage): Add version info about
	gm, libpng, zlib, and lcms to the PNG debug log.

2017-03-04  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* magick/command.c (ImportImageCommand): Fix handling of -frame
	options. Option handling was incorrect due to option checking the
	frame option after it had been freed.  Checking the frame dash
	option before freeing the argument solves the problem.  From patch
	provided by Victor Ananjevsky as SourceForge patch #49 "-frame
	doesn't work in gm import".

	* Magick++/lib/Image.cpp (attribute): Added Image attribute method
	which accepts a 'char *' argument, and will remove the attribute
	if the value argument is NULL.  From patch provided by "Gints" as
	SourceForge patch #46 "C++ api - method to clear/remove
	attribute".

	* VisualMagick/configure/configure.cpp (InitInstance): Applied
	patch by Paul McConkey to allow the quantum command line argument
	to set the default value in the wizard drop list.  This allows
	setting the quantum depth when the /nowizard argument was
	supplied.  Resolves SourceForge patch #48 "When running from the
	command line configure.exe does not use the quantum argument".
	The provided configure.exe still needs to be rebuilt to
	incorporate this change.

	* magick/command.c (MogrifyImage): The -orient command now also
	updates the orientation in the EXIF profile, if it exists.

	* Magick++/lib/Image.cpp (orientation): Update orientation in EXIF
	profile, if it exists.

2017-03-03  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/jp2.c: Support PGX JPEG 2000 format for reading and
	writing (within the bounds of what JasPer supports).

2017-02-23  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/tiff.c (QuantumTransferMode): Fix out of bounds read when
	reading CMYKA TIFF which claims to have only 2 samples per pixel.
	Problem was reported via email on February 15, 2017 by Valon
	Chu. This issue was assigned CVE-2017-6335.

2017-01-29  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* doc/options.imdoc (-geometry): Geometry documentation changes
	suggested by Jon Wong.

2017-01-26  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Added support for a proposed new PNG chunk
	(zxIf, read-only) that is currently being discussed on the
	png-mng-misc at lists.sourceforge.net mailing list.  Enable
	exIf and zxIf with CPPFLAGS="-DexIf_SUPPORTED -DxzIf_SUPPORTED".
	If exIf is enabled, only the uncompressed exIF chunk will be
	written and the hex-encoded zTXt chunk containing the raw Exif
	profile won't be written.

2017-01-25  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* coders/msl.c (MSLStartElement): Change test for NULL image
	pointer to before it is used rather than after it is used.
	Problem reported by Petr Gajdos on 2017-01-25.

2017-01-22  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* TclMagick/unix/m4/tcl.m4: Update tcl.m4 to TEA 3.10.  File
	supplied by Massimo Manghi.

2017-01-21  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Added support for a proposed new PNG
	chunk (exIf read-write, eXIf read-only) that is currently
	being discussed on the png-mng-misc at lists.sourceforge.net
	mailing list.

2017-01-21  Glenn Randers-Pehrson  <glennrp@simple.dallas.tx.us>

	* coders/png.c: Added read_user_chunk_callback() function
	and used it to implement a private PNG caNv (canvas) chunk
	for remembering the original dimensions and offsets when an
	image is cropped.  Previously we used the oFFs chunk for this
	purpose, but this had potential conflicts with other applications
	that also use the oFFs chunk.

2017-01-07  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* TclMagick/Makefile.am (AM_DISTCHECK_CONFIGURE_FLAGS): Applied
	patch by Massimo Manghi to set AM_DISTCHECK_CONFIGURE_FLAGS so
	that 'make distcheck' remembers configuration options, and also to
	uninstall pkgIndex.tcl.

	* magick/image.c (SetImageEx): Use PixelIterateMonoSet() for
	possibly improved efficiency.

	* magick/pixel_iterator.c (PixelIterateMonoSet): New pixel
	iterator intended for use when initializing image pixels, without
	regard to existing values.

2017-01-01  Bob Friesenhahn  <bfriesen@simple.dallas.tx.us>

	* Copyright.txt: Bump copyright years and rotate ChangeLog.