Content Security Policy “data” not working for base64 Images in Chrome 28

In this simple example, I'm trying to set a CSP header with the meta http-equiv header. I included a base64 image and I'm trying to make Chrome load the image.

I thought the data keyword should do that, but somehow it's not working.

I just get the following error in Developer Tools:

Refused to load the image 'data:image/png;base64,R0lGODlhDwAPAOZEAMkJCfAwMMYGBtZMTP75+euIiPFBP+hVVf3v7…nw7yk4Mjr6GLUY+joiBI2QAACABwJDCHgoKOHEoAYVBAgY8GGAxAoNGAmiwMHBCgccKDAKBAA7' because it violates the following Content Security Policy directive: "img-src 'self' data".

The example code (JSFiddle is not working for this example because I cannot set meta header there):

<html>
<head>
<meta http-equiv="Content-Security-Policy" content="
        default-src 'none';
        style-src 'self' 'unsafe-inline';
        img-src 'self' data;
        " />
    <style>
        #helloCSP {
            width: 50px;
            height: 50px;
            background: url(data:image/png;base64,R0lGODlhDwAPAOZEAMkJCfAwMMYGBtZMTP75+euIiPFBP+hVVf3v7+iHh/JNTfh9dNUYGPjTvskXFfOLi/daVe96es4eHPWIiOqbi9dNRvzWwexdV9U1NeFSS94iIvuxodVGP/ZsZM8jI+ibm/alluQzMdxSSvbGstwsKu2Yid4iIfjQu/JnYO6djvajlMQEBPvLuOJdXeMxL/3jzPBSTdwqKNY2Mf3i4vU5OfbPz/3f3/zUv/zizO0tLc0NDfMzM+UlJekpKeEhId0dHdUVFdkZGdEREf///wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAEQALAAAAAAPAA8AAAepgESCRBsLEDQQCxuDgxYdO5CROx0WgywGAQEKM0M2CpkGN0QvMDmmE0OpE6Y5KEQqPbE9D6lDD7I9IBc8vDwRtRG9PBcuPsY+B7UHxz4hP8/PGghDCBrQPyYxQdvbBUMF3NskGUDl5QwtDOblGSVC7+8JNQnw7yk4Mjr6GLUY+joiBI2QAACABwJDCHgoKOHEoAYVBAgY8GGAxAoNGAmiwMHBCgccKDAKBAA7) no-repeat;
            border: 1px solid red;
        }
    </style>
</head>
<body>
<h1>CSP</h1>
    <div id="helloCSP"></div>
</body>
</html>

You can also open this example here:
https://dl.dropboxusercontent.com/u/638360/ps/csp.html

According to the grammar in the CSP spec, you need to specify schemes as scheme:, not just scheme. So, you need to change the image source directive to:

img-src 'self' data:;

来源：https://stackoverflow.com/questions/18447970/content-security-policy-data-not-working-for-base64-images-in-chrome-28

标签

content-security-policy