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2017-12-25 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - tests/rwfile.tap: Add tests for MIFF compressed sub-formats.

2017-12-24 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/blob.c (OpenBlob): Zlib 1.2.8 does not accept an open mode of "w+b" or "wb+". It seems to be allergic to '+'. As a result, writing to ".gz" files was not working with Zlib 1.2.8. Note that "w+b" must be used in the normal case since the test suite fails otherwise!

2017-12-22 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/png.c (ReadMNGImage): Fix SourceForge issue #535 "heap-buffer-overflow in ReadMNGImage". Problem was caused by accessing byte before testing that limit has been reached, rather than testing for limit before accessing the byte. This means that it could only ever read one past the buffer allocation size.
> - coders/webp.c (WriteWEBPImage): Fix SourceForge issue #536 "stack-buffer-overflow in WriteWEBPImage". Due to a change to use WebPMemoryWriter as part of the EXIF and ICC profile support addition (enabled with libwebp 0.5.0), the progress indicator callback is now passed a pointer to a wrong structure. This is quite unfortunate since the progress indication is useful. The progress indication is temporarily disabled when the WebPMemoryWriter is in use until a solution is implemented. (ProgressCallback): Re-implement progress callback so that image pointer is stored/retrieved as thread-specific data.
> - coders/png.c (ReadMNGImage): Fix SourceForge issue #537 "null pointer dereference in ReadMNGImage". DEFI chunk must be at least 2 bytes long.
> - coders/tiff.c (ReadNewsProfile): Fix SourceForge issue #533 "heap-buffer-overflow on LocaleNCompare". LocaleNCompare() was being allowed to read heap data beyond the allocated region.

2017-12-17 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/shear.c (IntegralRotateImage): Assure that reported error in rotate by 270 case does immediately terminate processing. Return a NULL Image pointer if there is a problem rather than a corrupted image. Fix is related to SourceForge issue #532 "heap-buffer-overflow bug in ReadWPGImage".
> - magick/pixel_cache.c (AcquireCacheNexus): Add a check that the pixel cache is compatible with the image dimensions. Fix is related to SourceForge issue #532 "heap-buffer-overflow bug in ReadWPGImage".

2017-12-16 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/png.c (ReadOneJNGImage): Fix SourceForge issue #530 "heap-buffer-overflow in ReadOneJNGImage". In this case there is a read one byte beyond the oFFs chunk allocation size due to an error in specifying an offset into the chunk.
> - coders/palm.c (ReadPALMImage): Fix SourceForge issue #529 "global-buffer-overflow in ReadPALMImage". This issue only occured in builds with QuantumDepth=8 due to the small range of IndexPacket.

2017-12-13 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - PerlMagick/{Magick.pm, Magick.pm.in, Makefile.PL.in}: Only base PerlMagick version on numeric portion of PACKAGE_VERSION.

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 "Exif00".

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.