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GraphicsMagick.7644
GraphicsMagick-CVE-2017-16669.patch
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File GraphicsMagick-CVE-2017-16669.patch of Package GraphicsMagick.7644
Index: GraphicsMagick-1.3.25/coders/wpg.c =================================================================== --- GraphicsMagick-1.3.25.orig/coders/wpg.c 2017-11-23 13:09:02.632624453 +0100 +++ GraphicsMagick-1.3.25/coders/wpg.c 2017-11-23 13:14:39.814341071 +0100 @@ -280,6 +280,9 @@ static MagickPassFail InsertRow(unsigned case 2: /* Convert PseudoColor scanline. */ { indexes=AccessMutableIndexes(image); + if ((image->storage_class != PseudoClass) || + (indexes == (IndexPacket *) NULL)) + return MagickFail; x = 0; while(x < (long)image->columns-3) { @@ -337,14 +340,17 @@ static MagickPassFail InsertRow(unsigned if(RetVal==MagickFail) - (void) LogMagickEvent(CoderEvent,GetMagickModule(),"ImportImagePixelArea failed for row: %ld, bpp: %d", y, bpp); + { + (void) LogMagickEvent(CoderEvent,GetMagickModule(),"ImportImagePixelArea failed for row: %ld, bpp: %d", y, bpp); + return MagickFail; + } - if (!SyncImagePixels(image)) + if(!SyncImagePixels(image)) { - (void) LogMagickEvent(CoderEvent,GetMagickModule(),"SyncImagePixels failed for row: %ld, bpp: %d", y, bpp); - RetVal = MagickFail; + (void) LogMagickEvent(CoderEvent,GetMagickModule(),"SyncImagePixels failed for row: %ld, bpp: %d", y, bpp); + return MagickFail; } - + return RetVal; } @@ -356,19 +362,22 @@ return RetVal; x++; \ if((long) x>=ldblk) \ { \ - (void)InsertRow(BImgBuff,(long) y,image,bpp); \ + if(InsertRow(BImgBuff,(long) y,image,bpp)==MagickFail) RetVal=-6; \ x=0; \ y++; \ } \ } -/* WPG1 raster reader. */ +/* WPG1 raster reader. + * @return 0 - OK; -2 - alocation failure; -3 unaligned column; -4 - image row overflowl + -5 - blob read error; -6 - row insert problem */ static int UnpackWPGRaster(Image *image,int bpp) { int x, y, i; + int RetVal = 0; unsigned char bbuf, @@ -385,15 +394,15 @@ static int UnpackWPGRaster(Image *image, (void) LogMagickEvent(CoderEvent,GetMagickModule(), "Raster allocation size: %ld byte%s", ldblk, (ldblk > 1 ? "s" : "")); - BImgBuff=MagickAllocateMemory(unsigned char *,(size_t) 8*ldblk); + BImgBuff=MagickAllocateMemory(unsigned char *,(size_t) ldblk); if(BImgBuff==NULL) return(-2); (void) memset(BImgBuff,0,(size_t) ldblk); while(y<(long) image->rows) { i = ReadBlobByte(image); - if(i==EOF) - { + if(i==EOF) + { MagickFreeMemory(BImgBuff); return(-5); } @@ -438,13 +447,18 @@ static int UnpackWPGRaster(Image *image, MagickFreeMemory(BImgBuff); return(-4); } - (void) InsertRow(BImgBuff,y-1,image,bpp); + if(InsertRow(BImgBuff,y-1,image,bpp)==MagickFail) + { + MagickFreeMemory(BImgBuff); + return(-6); + } + } } } } MagickFreeMemory(BImgBuff); - return(0); + return(RetVal); } @@ -458,7 +472,7 @@ static int UnpackWPGRaster(Image *image, x++; \ if((long) x >= ldblk) \ { \ - (void)InsertRow(BImgBuff,(long) y,image,bpp); \ + if(InsertRow(BImgBuff,(long) y,image,bpp)==MagickFail) RetVal=-6; \ x=0; \ y++; \ XorMe = 0; \ @@ -501,6 +515,7 @@ static int UnpackWPG2Raster(Image *image int XorMe = 0; int c; + int RetVal = 0; x=0; y=0; @@ -587,15 +602,18 @@ static int UnpackWPG2Raster(Image *image { /* duplicate the previous row RunCount x */ for(i=0;i<=RunCount;i++) - { - (void) InsertRow(UpImgBuff,(long) (image->rows >= y ? y : image->rows-1), - image,bpp); + { + if(InsertRow(UpImgBuff,(long)((image->rows>y) ? y : image->rows-1),image,bpp) == MagickFail) + { + FreeUnpackWPG2RasterAllocs(BImgBuff,UpImgBuff); + return(-4); + } y++; - } + } } break; case 0xFF: - if ((c = ReadBlobByte(image)) == EOF) /* WHT */ + if ((c = ReadBlobByte(image)) == EOF) /* WHT */ { FreeUnpackWPG2RasterAllocs(BImgBuff,UpImgBuff); return(-4); @@ -632,7 +650,7 @@ static int UnpackWPG2Raster(Image *image } } FreeUnpackWPG2RasterAllocs(BImgBuff,UpImgBuff); - return(0); + return(RetVal); } @@ -993,7 +1011,7 @@ static Image *ReadWPGImage(const ImageIn if(i==EOF) break; Rd_WP_DWORD(image,&Rec.RecordLength); - if (Rec.RecordLength > GetBlobSize(image)) + if ((magick_off_t) Rec.RecordLength > GetBlobSize(image)) ThrowReaderException(CorruptImageError,ImproperImageHeader,image); if(EOFBlob(image)) break; @@ -1234,10 +1249,18 @@ static Image *ReadWPGImage(const ImageIn WPG_Palette.StartIndex=ReadBlobLSBShort(image); WPG_Palette.NumOfEntries=ReadBlobLSBShort(image); - /* Sanity check for amount of palette entries. */ - if( (WPG_Palette.NumOfEntries-WPG_Palette.StartIndex) > (Rec2.RecordLength-2-2) / 3) - ThrowReaderException(CorruptImageError,InvalidColormapIndex,image); - + /* Sanity check for amount of palette entries. */ + if (WPG_Palette.NumOfEntries == 0) + ThrowReaderException(CorruptImageError,UnrecognizedNumberOfColors,image); + + if (WPG_Palette.NumOfEntries > MaxMap+1) + ThrowReaderException(CorruptImageError,ColormapExceedsColorsLimit,image); + + if ( (WPG_Palette.StartIndex > WPG_Palette.NumOfEntries) || + (((WPG_Palette.NumOfEntries-WPG_Palette.StartIndex) > + ((Rec2.RecordLength-2-2) / 3))) ) + ThrowReaderException(CorruptImageError,InvalidColormapIndex,image); + image->colors=WPG_Palette.NumOfEntries; if (!AllocateImageColormap(image,image->colors)) ThrowReaderException(ResourceLimitError,MemoryAllocationFailed,image); @@ -1277,9 +1300,9 @@ static Image *ReadWPGImage(const ImageIn continue; /*Ignore raster with unknown depth*/ } image->columns=Bitmap2Header1.Width; - image->rows=Bitmap2Header1.Heigth; + image->rows=Bitmap2Header1.Heigth; - if ((image->colors == 0) && (bpp <= 16)) + if ((image->colors == 0) && (bpp != 24)) { image->colors=1 << bpp; if (!AllocateImageColormap(image,image->colors)) @@ -1300,18 +1323,21 @@ static Image *ReadWPGImage(const ImageIn case 0: /*Uncompressed raster*/ { ldblk=(long) ((bpp*image->columns+7)/8); - BImgBuff=MagickAllocateMemory(unsigned char *,(size_t) ldblk+1); + BImgBuff=MagickAllocateMemory(unsigned char *,(size_t) ldblk); if (BImgBuff == (unsigned char *) NULL) goto NoMemory; for(i=0; i< (long) image->rows; i++) { (void) ReadBlob(image,ldblk,(char *) BImgBuff); - (void) InsertRow(BImgBuff,i,image,bpp); + if(InsertRow(BImgBuff,i,image,bpp) == MagickFail) + { + if(BImgBuff) MagickFreeMemory(BImgBuff); + goto DecompressionFailed; + } } - if(BImgBuff) - MagickFreeMemory(BImgBuff); + if(BImgBuff) MagickFreeMemory(BImgBuff); break; } case 1: /*RLE for WPG2 */
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