http2: verify :athority in push promise requests#3581
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RFC 7540 says we should verify that the push is for an "authoritative" server. We make sure of this by only allowing push with an :athority header that matches the host that was asked for in the URL. Fixes #3577 Reported-by: Nicolas Grekas Bug: https://curl.haxx.se/mail/lib-2019-02/0057.html
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Thanks! |
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I'll add a note in the TODO about it, then at least it's not forgotten. |
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RFC 7540 says we should verify that the push is for an "authoritative"
server. We make sure of this by only allowing push with an :athority
header that matches the host that was asked for in the URL.
Fixes #3577
Reported-by: Nicolas Grekas
Bug: https://curl.haxx.se/mail/lib-2019-02/0057.html
I've asked @tatsuhiro-t separately for advice on what the best suitable return code is from the callback in case the authority isn't deemed fine, but in the mean time here's a take.