Cross-Site Request Forgery Prevention - OWASP Cheat Sheet Series
Introduction Index Alphabetical Index ASVS Index MASVS Index Proactive Controls Index Top 10 Cheatsheets Cross-Site Request Forgery Prevention Cheat Sheet¶ Introduction¶ A Cross-Site Request Forgery (CSRF) attack occurs when a malicious web site, email, blog, instant message, or program tricks an authenticated user's web browser into performing an unwanted action on a trusted site. If a target use
CSRF protection with custom headers (and without validating token)
For a REST-api it seems that it is sufficient to check the presence of a custom header to protect against CSRF attacks, e.g. client sends "X-Requested-By: whatever" and the server checks the presence of "X-Requested-By" and drops the request if the header isn't found. The value of the header is irrelevant. This is how Jersey 1.9's CsrfProtectionFilter works and it is described in this blog post: h
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