https://github.com/ImageMagick/ImageMagick/issues/578

https://github.com/ImageMagick/ImageMagick/issues/568

diff --git a/coders/pwp.c b/coders/pwp.c
index 3150313e9f8460107c78100d84350c674bb17426..c7827f0c677358c642774e4ea948cc9ca2a855be 100644 (file)
--- a/coders/pwp.c
+++ b/coders/pwp.c
@@ -170,6 +170,7 @@ static Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
   status=OpenBlob(image_info,pwp_image,ReadBinaryBlobMode,exception);
   if (status == MagickFalse)
     return((Image *) NULL);
+  ResetMagickMemory(magick,0,sizeof(magick));
   count=ReadBlob(pwp_image,5,magick);
   if ((count != 5) || (LocaleNCompare((char *) magick,"SFW95",5) != 0))
     ThrowReaderException(CorruptImageError,"ImproperImageHeader");