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state parameter required on verify POST #81

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ghost opened this issue Mar 10, 2015 · 2 comments
Closed

state parameter required on verify POST #81

ghost opened this issue Mar 10, 2015 · 2 comments

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@ghost
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ghost commented Mar 10, 2015

It looks like the state parameter is needed in POST requests to the auth endpoint on IndieAuth.com. Is this actually really required in order for IndieAuth to be safe?
@ghost
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ghost commented Mar 15, 2015

My client lib just sends the state parameter now, IndieCert just ignores it...

@aaronpk
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aaronpk commented Jun 1, 2015

The state parameter is used to prevent CSRF attacks. See http://tools.ietf.org/html/rfc6749#section-10.12 for more details. By requiring the state parameter is sent to the authorization endpoint when verifying auth codes, it acts as a built-in check that the client used it.

@aaronpk aaronpk closed this as completed Jun 1, 2015
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