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Added a reference for the claim in CSRF docs that GET requests

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should be side-effect free.


git-svn-id: http://code.djangoproject.com/svn/django/trunk@5902 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Luke Plant 2007-08-16 14:09:41 +00:00
parent 296d8d4553
commit c568792e81
1 changed files with 6 additions and 4 deletions
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10
docs/csrf.txt
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@ -41,10 +41,10 @@ CsrfMiddleware does two things:
This ensures that only forms that have originated from your web site
can be used to POST data back.
It deliberately only targets HTTP POST requests (and the corresponding
POST forms). GET requests ought never to have side effects (if you are
using HTTP GET and POST correctly), and so a CSRF attack with a GET
request will always be harmless.
It deliberately only targets HTTP POST requests (and the corresponding POST
forms). GET requests ought never to have any potentially dangerous side
effects (see `9.1.1 Safe Methods, HTTP 1.1, RFC 2616`_), and so a
CSRF attack with a GET request ought to be harmless.
POST requests that are not accompanied by a session cookie are not protected,
but they do not need to be protected, since the 'attacking' web site
@ -54,6 +54,8 @@ The Content-Type is checked before modifying the response, and only
pages that are served as 'text/html' or 'application/xml+xhtml'
are modified.
.. _9.1.1 Safe Methods, HTTP 1.1, RFC 2616: http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
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