If a browser does not support HttpOnly and a website attempts to set an HttpOnly cookie, the HttpOnly flag will be ignored by the browser, thus creating a traditional, script accessible cookie. As a result, the cookie (typically your session cookie) becomes vulnerable to theft of modification by malicious script.
Implementation Procedure in Apache
- Ensure you have mod_headers.so enabled in Apache HTTP server.
- Add following entry in httpd.conf. Header edit Set-Cookie ^(.*)$ $1;HttpOnly;Secure;SameSite=None.
- Restart Apache HTTP server to test.
An HttpOnly Cookie is a tag added to a browser cookie that prevents client-side scripts from accessing data. … Using the HttpOnly tag when generating a cookie helps mitigate the risk of client-side scripts accessing the protected cookie, thus making these cookies more secure.
Cookies are sent with every request, so they can worsen performance (especially for mobile data connections). Modern APIs for client storage are the Web Storage API ( localStorage and sessionStorage ) and IndexedDB.
Session cookies expire once you log off or close the browser. They are only stored temporarily and are destroyed after leaving the page. They are also known as transient cookies, non-persistent cookies, or temporary cookies. … This is unlike a persistent cookie, which contains an expiration date.
Cookies can be removed in React. js by using the following methods: By using cookies. remove() in the react-cookie library.
Press “F12” to open Developer Tools. Select “cache” and then “view cookie information”. If the application does not set the HTTPOnly flag on session cookies or if the application administrator cannot demonstrate mitigating controls, this is a finding.
Can HttpOnly prevent XSS?
Using HttpOnly cookies will prevent XSS attacks from getting those cookies.
The Set-Cookie HTTP response header is used to send a cookie from the server to the user agent, so that the user agent can send it back to the server later. To send multiple cookies, multiple Set-Cookie headers should be sent in the same response.