diff -rupN --no-dereference podofo-0.10.3/tools/podofoimgextract/ImageExtractor.cpp podofo-0.10.3-new/tools/podofoimgextract/ImageExtractor.cpp
--- podofo-0.10.3/tools/podofoimgextract/ImageExtractor.cpp	2023-11-28 10:23:37.000000000 +0100
+++ podofo-0.10.3-new/tools/podofoimgextract/ImageExtractor.cpp	2023-12-07 08:44:38.717337352 +0100
@@ -88,6 +88,11 @@ void ImageExtractor::ExtractImage(const
         //long lBitsPerComponent = pObject->GetDictionary().GetKey( PdfName("BitsPerComponent" ) )->GetNumber();
         // TODO: Handle colorspaces
 
+        if ( !pObject->GetDictionary().HasKey( PdfName("Width" ) ) || !pObject->GetDictionary().HasKey( PdfName("Height" ) ) )
+        {
+            PODOFO_RAISE_ERROR( ePdfError_BrokenFile );
+        }
+
         // Create a ppm image
         const char* ppmHeader = "P6\n# Image extracted by PoDoFo\n%u %u\n%li\n";