MS word to ckeditor image paste is not working in chrome and firefox. But it's working in IE browsers

I tried to paste the image from ms word to ckeditor and it was working in all the browsers. But if i select the entire word document(Image + String) then it's not working in firefox,chrome. After debugging the ckeditor file-upload plug-in I found that the image source format likes local files format. ex) img src="file:///c:/AppsData/local/0001.png"

Is there any way to convert the img src="file:///c:/AppsData/local/0001.png" to base64(Chrome,firefox) ?

I tried canvas functionality and i can able to convert the local file to base64 in IE.But In firefox,chrome getting security exceptions.