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Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Sergey Kandaurov
June 02, 2020 05:52AM
> On 2 Jun 2020, at 07:58, PGNet Dev <pgnet.dev@gmail.com> wrote:
>
> 2020/06/02 00:50:08 [info] 20166#20166: *3 client attempted to request the server name different from the one that was negotiated while reading client request headers, client: 127.0.0.1, server: test.example.net, request: "GET /app1 HTTP/1.1", host: "example.net"
>
> now, need to stare at this and try to figure out 'why?'

That means client provided TLS "server_name" extension (SNI),
then requested a different origin in the Host header.

In your case, the mangled name "test.example.net" (via SNI)
didn't match another mangled name "example.net" (in Host).

For the formal specification, see the last paragraph in RFC 6066, section-3:

If an application negotiates a server name using an application
protocol and then upgrades to TLS, and if a server_name extension is
sent, then the extension SHOULD contain the same name that was
negotiated in the application protocol. If the server_name is
established in the TLS session handshake, the client SHOULD NOT
attempt to request a different server name at the application layer.

421 is defined for such cases in HTTP.

--
Sergey Kandaurov

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Subject Author Posted

proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

PGNet Dev May 29, 2020 10:10PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Maxim Dounin June 01, 2020 11:44AM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

PGNet Dev June 02, 2020 12:44AM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

PGNet Dev June 02, 2020 01:00AM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Sergey Kandaurov June 02, 2020 05:52AM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Francis Daly June 02, 2020 11:28AM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

PGNet Dev June 02, 2020 03:12PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Maxim Dounin June 02, 2020 03:36PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

PGNet Dev June 02, 2020 04:02PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Maxim Dounin June 02, 2020 07:14PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Maxim Dounin June 02, 2020 03:22PM

Re: proxy_ssl_verify error: 'upstream SSL certificate does not match "test.example.com" while SSL handshaking to upstream', for CN/SAN 'matched' client & server certs ?

Francis Daly June 04, 2020 11:20AM



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