diff options
Diffstat (limited to 'community/graphicsmagick/CVE-2017-14042.patch')
| -rw-r--r-- | community/graphicsmagick/CVE-2017-14042.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/community/graphicsmagick/CVE-2017-14042.patch b/community/graphicsmagick/CVE-2017-14042.patch new file mode 100644 index 0000000000..524632a1ed --- /dev/null +++ b/community/graphicsmagick/CVE-2017-14042.patch @@ -0,0 +1,77 @@ + +# HG changeset patch +# User Bob Friesenhahn <bfriesen@GraphicsMagick.org> +# Date 1503268616 18000 +# Node ID 3bbf7a13643df3be76b0e19088a6cc632eea2072 +# Parent 83a5b946180835f260bcb91e3d06327a8e2577e3 +PNM: For binary formats, verify sufficient backing file data before memory request. + +diff -r 83a5b9461808 -r 3bbf7a13643d coders/pnm.c +--- a/coders/pnm.c Sun Aug 20 17:31:35 2017 -0500 ++++ b/coders/pnm.c Sun Aug 20 17:36:56 2017 -0500 +@@ -569,7 +569,7 @@ + (void) LogMagickEvent(CoderEvent,GetMagickModule(),"Colors: %u", + image->colors); + } +- number_pixels=image->columns*image->rows; ++ number_pixels=MagickArraySize(image->columns,image->rows); + if (number_pixels == 0) + ThrowReaderException(CorruptImageError,NegativeOrZeroImageSize,image); + if (image->storage_class == PseudoClass) +@@ -858,14 +858,14 @@ + if (1 == bits_per_sample) + { + /* PBM */ +- bytes_per_row=((image->columns+7) >> 3); ++ bytes_per_row=((image->columns+7U) >> 3); + import_options.grayscale_miniswhite=MagickTrue; + quantum_type=GrayQuantum; + } + else + { + /* PGM & XV_332 */ +- bytes_per_row=((bits_per_sample+7)/8)*image->columns; ++ bytes_per_row=MagickArraySize(((bits_per_sample+7U)/8U),image->columns); + if (XV_332_Format == format) + { + quantum_type=IndexQuantum; +@@ -878,7 +878,8 @@ + } + else + { +- bytes_per_row=(((bits_per_sample+7)/8)*samples_per_pixel)*image->columns; ++ bytes_per_row=MagickArraySize((((bits_per_sample+7)/8)*samples_per_pixel), ++ image->columns); + if (3 == samples_per_pixel) + { + /* PPM */ +@@ -915,6 +916,28 @@ + is_monochrome=MagickFalse; + } + } ++ ++ /* Validate file size before allocating memory */ ++ if (BlobIsSeekable(image)) ++ { ++ const magick_off_t file_size = GetBlobSize(image); ++ const magick_off_t current_offset = TellBlob(image); ++ if ((file_size > 0) && ++ (current_offset > 0) && ++ (file_size > current_offset)) ++ { ++ const magick_off_t remaining = file_size-current_offset; ++ const magick_off_t needed = (magick_off_t) image->rows * ++ (magick_off_t) bytes_per_row; ++ if ((remaining < (magick_off_t) bytes_per_row) || ++ (remaining < needed)) ++ { ++ ThrowException(exception,CorruptImageError,UnexpectedEndOfFile, ++ image->filename); ++ break; ++ } ++ } ++ } + + scanline_set=AllocateThreadViewDataArray(image,exception,bytes_per_row,1); + if (scanline_set == (ThreadViewDataSet *) NULL) + |