ColladaParser: check values length (#5462)

* ColladaParser: check values length

fixes: #4286

* Refactor calculation of size for data

---------

Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>

test/unit/utColladaImportExport.cpp

@@ -357,6 +357,14 @@ TEST_F(utColladaImportExport, exporterUniqueIdsTest) {
     ImportAsNames(outFileNamed, scene);
 }
 
+// This file is invalid, we just want to ensure that the importer is not crashing
+// This was reported as GH#4286. The "count" parameter in "Cube-mesh-positions-array" is too small.
+TEST_F(utColladaImportExport, parseInvalid4286) {
+    Assimp::Importer importer;
+    const aiScene *scene = importer.ReadFile(ASSIMP_TEST_MODELS_DIR "/invalid/box_nested_animation_4286.dae", 0);
+    EXPECT_EQ(nullptr, scene);
+}
+
 #endif
 
 class utColladaZaeImportExport : public AbstractImportExportBase {