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2019-02-15 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/jpeg.c (ReadJPEGImage): Base test for "Unreasonable dimensions" on original JPEG dimensions and not the scaled dimensions. Fixes SourceForge issue 593 "gm convert: Insufficient image data in file when hinting input image".

2019-02-13 Troy Patteson <troyp@ieee.org>

> - PerlMagick/Magick.xs (Mogrify): Add decorate argument to Annotate.
> - PerlMagick/Magick.xs (Mogrify): Remove reference to undefined Annotate argument.

2019-02-12 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/tiff.c (ReadTIFFImage): For planar TIFF, make sure that pixels are initialized in case some planes are missing. Fixes oss-fuzz 13046 "graphicsmagick/coder_PTIF_fuzzer: Use-of-uninitialized-value in DisassociateAlphaRegion". (Credit to OSS-Fuzz)

2019-02-11 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/pdf.c (WritePDFImage): Make sure to free 'xref' before returning. Similar to ImageMagick CVE-2019-7397 "In ImageMagick before 7.0.8-25, several memory leaks exist in WritePDFImage in coders/pdf.c.". Thanks to Petr Gajdos for bringing this issue to our attention.

2019-02-10 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/wpg.c (ReadWPGImage): Use a different way to reallocate the colormap which preserves existing content, but also updates image->colors and assures that added palette entries are initialized.
> - coders/png.c (ReadMNGImage): Bound maximum loop iterations by subrange as a primitive means of limiting resource consumption. This should finally resolve oss-fuzz 12738 "graphicsmagick/enhance_fuzzer: Out-of-memory in graphicsmagick_enhance_fuzzer". (Credit to OSS-Fuzz)
> - coders/tiff.c (ReadTIFFImage): Assure that opacity channel is initialized in the RGBAStrippedMethod case. Convert 'CorruptImageError' encountered while testing for more frames to 'CorruptImageWarning' so we return the frames already read. Second try at fixing oss-fuzz 11896 "graphicsmagick/coder_PTIF_fuzzer: Use-of-uninitialized-value in VerticalFilter".
> - coders/dpx.c (AttributeToString): Eliminate clang "-Wstring-plus-int" warning observed in oss-fuzz build.
> - coders/cineon.c (AttributeToString): Eliminate clang "-Wstring-plus-int" warning observed in oss-fuzz build.

2019-02-09 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/pict.c (DecodeImage): Avoide a one-byte over-read of pixels heap allocation. The cause of the over-read is not yet understood. Fixes oss-fuzz 12019 "graphicsmagick/coder_PICT_fuzzer: Heap-buffer-overflow in ExpandBuffer". (Credit to OSS-Fuzz)
> - coders/wpg.c (ReadWPGImage): Assure that all colormap entries are initialized. Fixes oss-fuzz 12614 "graphicsmagick/enhance_fuzzer: Use-of-uninitialized-value in EnhanceImage". (Credit to OSS-Fuzz)
> - coders/tiff.c (ReadTIFFImage): Make sure that image is in DirectClass mode and ignore any claimed colormap when the image is read using the RGBAStrippedMethod, RGBATiledMethod, or RGBAPuntMethod cases. Fixes oss-fuzz 12195 "graphicsmagick/coder_PTIF_fuzzer: Use-of-uninitialized-value in ExportGrayQuantumType". (Credit to OSS-Fuzz)
> - coders/miff.c (ReadMIFFImage): Improve pixel buffer calculations to defend against overflow. Assure that zlib and bzlib decode the expected number of bytes for a pixel row. Fixes oss-fuzz issue 12448 "graphicsmagick/coder_MIFF_fuzzer: Use-of-uninitialized-value in RGBTransformPackets". (Credit to OSS-Fuzz)

2019-02-08 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/png.c (ReadMNGImage): Quit processing and report error upon failure to insert MNG background layer. Fixes oss-fuzz 12738 "graphicsmagick/enhance_fuzzer: Out-of-memory in graphicsmagick_enhance_fuzzer". (Credit to OSS-Fuzz)

2019-02-03 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/dib.c (ReadDIBImage, WriteDIBImage): Improve buffer-size calculations to guard against buffer overflows. The reader version was not as complete as it should have been, whereas the writer version did not guard against arithmetic overflow at all.
> - coders/bmp.c (ReadBMPImage, WriteBMPImage): Improve buffer-size calculations to guard against buffer overflows. This is a follow-on fix to the previous fix submitted for SourceForge issue #582 "heap-buffer-overflow in ReadBMPImage of bmp.c" which is now also identified as CVE-2018-20185.
> - www/Hg.rst: Updates to reflect current usage and availability.
> - www/authors.rst: Promote Troy Patteson to the active contributor category.

2019-02-01 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/version.h.in: Rotate ChangeLog and update copyright statements for the new year.

2019-01-30 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - coders/webp.c (WriteWEBPImage): Patch by Przemysław Sobala to support WebP 'use_sharp_yuv' option ("if needed, use sharp (and slow) RGB->YUV conversion") via -define webp:use-sharp-yuv=true.

2019-01-05 Bob Friesenhahn <bfriesen@simple.dallas.tx.us>

> - magick/pixel_cache.c (SetNexus): Merge IsNexusInCore() implementation code into SetNexus() and add check for if cache_info->pixels is null. Fixes SourceForge issue #588 "Bug in IsNexusInCore()".
> - configure.ac (DcrawExtraOptions): Request TIFF output from dcraw if build supports TIFF format in order to obtain more metadata. This allows obtaining some metadata from standard TIFF tags (e.g. camera make, model, and dcraw version), and any attached ICC profile, but not specifically EXIF data since we don't support extracting EXIF data from TIFF yet. Inspired by SourceForge issue 589 "Identify lack of data (no Exif) in RAW formats".