A Tasty Treats Podcast for Web Developers.

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Wes Bos

Wes Bos

Full Stack JavaScript Developer. Creator of really good web development courses. BBQ enthusiast.

Scott Tolinski

Scott Tolinski

Web Developer, Creator of Level Up Tuts, Bboy, Robotops Crew and Youtuber

Playing: 363: Hasty Treat - CSRF Explained

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LOUDNESS

Jun 21st, 2021

Hasty Treat - CSRF Explained

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In this Hasty Treat, Scott and Wes talk about CSRF (Cross Site Request Forgery)!

Prismic - Sponsor

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Show Notes

05:40 - What is it?

07:50 - Solutions

  • SameSite Cookie
  • https://medium.com/swlh/secure-httponly-samesite-http-cookies-attributes-and-set-cookie-explained-fc3c753dfeb6
    • Lax — Default value in modern browsers. Cookies are allowed to be sent with top-level navigations and will be sent along with GET requests initiated by a third party website. The cookie is withheld on cross-site subrequests, such as calls to load images or frames, but is sent when a user navigates to the URL from an external site, such as by following a link.
    • Strict — As the name suggests, this is the option in which the Same-Site rule is applied strictly. Cookies will only be sent in a first-party context and not be sent along with requests initiated by third party websites. The browser sends the cookie only for same-site requests (that is, requests originating from the same site that set the cookie). If the request originated from a different URL than the current one, no cookies with the SameSite=Strict attribute are sent.
    • None — Cookies will be sent in all contexts, i.e sending cross-origin is allowed. The browser sends the cookie with both cross-site and same-site requests.
  • CSRF Token
  • Check Origin / Referrer Headers
  • Captcha
  • Ask for Password
  • Token

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