Re: OpenSSL-1.1.1a - No TLSv1.3 with unbound

[Michael Tremer <michael.tremer@ipfire.org>]

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Hey Erik,

Did you try Matthias’ patch for unbound 1.9.0?

> On 14 Feb 2019, at 07:24, ummeegge <ummeegge(a)ipfire.org> wrote:
> 
> Hi Peter,
> 
> On Mi, 2019-02-13 at 19:40 +0000, Peter Müller wrote:
>> Hello Michael, hello Erik,
>> 
>> sorry for the long delay here. :-\
>> 
>> I noticed the AESCCM issue with Unbound, and will have a look
>> at it (never observed these ciphers in the wild - i.e. web and mail
>> traffic - but that does not mean anything here).
> I think the disabled AESCCM should not be the problem since on the
> first testing days TLSv1.3 did worked without problems on my machine.
> It worked at that time with the old cipher patch but also only with the
> three TLSv1.3 defaults ciphers:
> 
> # TLS_AES_256_GCM_SHA384  TLSv1.3 Kx=any      Au=any  Enc=AESGCM(256) Mac=AEAD
> # TLS_CHACHA20_POLY1305_SHA256 TLSv1.3 Kx=any      Au=any  Enc=CHACHA20/POLY1305(256) Mac=AEAD
> # TLS_AES_128_GCM_SHA256  TLSv1.3 Kx=any      Au=any  Enc=AESGCM(128) Mac=AEAD
> 
> 
> so the other two CCM ciphers wasn´t enabled there.
> 
> In unbound´s example conf the tls-ciphersuites are:
> 
> # cipher setting for TLSv1.3 
> # tls-ciphersuites: "TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_8_SHA256:TLS_AES_128_CCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256"
> 
> which differs very much to that one which i´d see the last time. In my
> humble opinion, it looks like speed opitimization. I think this
> settings are server settings.

Yes. The client usually offers everything it supports and the server picks the best cipher according to its own list.

So that does not have anything to do with how unbound connects to an upstream server.

>> At the moment, I do not have an idea what is going wrong
>> here (currently using 127-stable).
> What are you thinking about to go for some OpenSSL checks ? Not sure
> when Core 128 will be released but as i remember it should come not
> that long after Core 127 ???

Yes, it should have been in testing by now, but Arne is away. Hence there is a little delay.

> 
> Since this is a bigger update it might be great if more people comes
> around to test the new OpenSSL lib...
> 
>> 
>> P.S.: It's CloudFlare, not Cloudflair. :-)
> Thanks for finding the bug :D .
> 
>> 
>> P.P.S.: Thank you for the DoT server list. I will update the Wiki
>> page.
> Your welcome but keep in mind that a lot of this servers listed in
> there are testing ones (regular checks points out that there are longer
> time off or do have problems with certificates).
> CleanBrowsing, Adguard (not sure which lists they use to filter!) and
> Google are new listed as regular public resolvers -->
> https://dnsprivacy.org/wiki/display/DP/DNS+Privacy+Public+Resolvers .
> 
> Best,
> 
> Erik
> 
> 
>> 
>> Thanks, and best regards,
>> Peter Müller
>> 
>>> Hi,
>>> 
>>> This is a bit weird.
>>> 
>>> Does the version of unbound support TLS 1.3? We had to update
>>> Apache to support TLS 1.3 and we had to just rebuild haproxy to
>>> support it, too. Since you are running a build of unbound that was
>>> built against OpenSSL 1.1.1 I would say the latter isn’t likely.
>>> 
>>> -Michael
>>> 
>>>> On 10 Feb 2019, at 14:15, ummeegge <ummeegge(a)ipfire.org> wrote:
>>>> 
>>>> Hi all,
>>>> did an fresh install from origin/next of Core 128 with the new
>>>> OpenSSL-
>>>> 1.1.1a . Have checked also DNS-over-TLS which works well but kdig
>>>> points out that the TLS sessions operates only with TLSv1.2
>>>> instaed of
>>>> the new delivered TLSv1.3 .
>>>> 
>>>> A test with Cloudflair (which uses TLSv1.3) looks like this -->
>>>> 
>>>> kdig Test:
>>>> 
>>>> 
>>>> ;; DEBUG: Querying for owner(www.isoc.org.), class(1), type(1),
>>>> server(1.1.1.1), port(853), protocol(TCP)
>>>> ;; DEBUG: TLS, imported 135 certificates from '/etc/ssl/certs/ca-
>>>> bundle.crt'
>>>> ;; DEBUG: TLS, received certificate hierarchy:
>>>> ;; DEBUG:  #1, C=US,ST=California,L=San Francisco,O=Cloudflare\,
>>>> Inc.,CN=cloudflare-dns.com
>>>> ;; DEBUG:      SHA-256 PIN:
>>>> V6zes8hHBVwUECsHf7uV5xGM7dj3uMXIS9//7qC8+jU=
>>>> ;; DEBUG:  #2, C=US,O=DigiCert Inc,CN=DigiCert ECC Secure Server
>>>> CA
>>>> ;; DEBUG:      SHA-256 PIN:
>>>> PZXN3lRAy+8tBKk2Ox6F7jIlnzr2Yzmwqc3JnyfXoCw=
>>>> ;; DEBUG: TLS, skipping certificate PIN check
>>>> ;; DEBUG: TLS, The certificate is trusted. 
>>>> ;; TLS session (TLS1.2)-(ECDHE-ECDSA-SECP256R1)-(AES-256-GCM)
>>>> ;; ->>HEADER<<- opcode: QUERY; status: NOERROR; id: 51175
>>>> ;; Flags: qr rd ra ad; QUERY: 1; ANSWER: 2; AUTHORITY: 0;
>>>> ADDITIONAL: 1
>>>> 
>>>> ;; EDNS PSEUDOSECTION:
>>>> ;; Version: 0; flags: do; UDP size: 1452 B; ext-rcode: NOERROR
>>>> ;; PADDING: 239 B
>>>> 
>>>> ;; QUESTION SECTION:
>>>> ;; www.isoc.org.       		IN	A
>>>> 
>>>> ;; ANSWER SECTION:
>>>> www.isoc.org.       	300	IN	A	46.43.36.222
>>>> www.isoc.org.       	300	IN	RRSIG	A 7 3 300
>>>> 20190224085001 20190210085001 45830 isoc.org.
>>>> g64C7zJUL1zqUBbcZVDcEKO05EHz19ZHwxr4i8kTieW8XgX63lLZwhJTL1UK0NxOG
>>>> CPOZSVthWBp9HF9WnFjPsxsfkrxkOoz/Hcl1ZuTpWUTBLfBKqnpPJm2NJ2yoR7hPe
>>>> rUvtl0sHJnIOczrHnAlCwZBo8OOw9tlW0va+706ZQ=
>>>> 
>>>> ;; Received 468 B
>>>> ;; Time 2019-02-10 12:40:19 CET
>>>> ;; From 1.1.1.1(a)853(TCP) in 18.0 ms
>>>> 
>>>> 
>>>> 
>>>> And a test with s_client:
>>>> 
>>>> [root(a)ipfire tmp]# openssl s_client -connect 1.1.1.1:853
>>>> CONNECTED(00000003)
>>>> depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN =
>>>> DigiCert Global Root CA
>>>> verify return:1
>>>> depth=1 C = US, O = DigiCert Inc, CN = DigiCert ECC Secure Server
>>>> CA
>>>> verify return:1
>>>> depth=0 C = US, ST = California, L = San Francisco, O =
>>>> "Cloudflare, Inc.", CN = cloudflare-dns.com
>>>> verify return:1
>>>> ---
>>>> Certificate chain
>>>> 0 s:C = US, ST = California, L = San Francisco, O = "Cloudflare,
>>>> Inc.", CN = cloudflare-dns.com
>>>>  i:C = US, O = DigiCert Inc, CN = DigiCert ECC Secure Server CA
>>>> 1 s:C = US, O = DigiCert Inc, CN = DigiCert ECC Secure Server CA
>>>>  i:C = US, O = DigiCert Inc, OU = www.digicert.com, CN =
>>>> DigiCert Global Root CA
>>>> ---
>>>> Server certificate
>>>> -----BEGIN CERTIFICATE-----
>>>> MIIFxjCCBUygAwIBAgIQAczjGN6fVn+rKySQH62nHTAKBggqhkjOPQQDAjBMMQsw
>>>> CQYDVQQGEwJVUzEVMBMGA1UEChMMRGlnaUNlcnQgSW5jMSYwJAYDVQQDEx1EaWdp
>>>> Q2VydCBFQ0MgU2VjdXJlIFNlcnZlciBDQTAeFw0xOTAxMjgwMDAwMDBaFw0yMTAy
>>>> MDExMjAwMDBaMHIxCzAJBgNVBAYTAlVTMRMwEQYDVQQIEwpDYWxpZm9ybmlhMRYw
>>>> FAYDVQQHEw1TYW4gRnJhbmNpc2NvMRkwFwYDVQQKExBDbG91ZGZsYXJlLCBJbmMu
>>>> MRswGQYDVQQDExJjbG91ZGZsYXJlLWRucy5jb20wWTATBgcqhkjOPQIBBggqhkjO
>>>> PQMBBwNCAATFIHCMIEJQKB59REF8MHkpHGNeHUSbxfdxOive0qKksWw9ash3uMuP
>>>> LlBT/fQYJn9hN+3/wr7pC125fuHfHOJ0o4ID6DCCA+QwHwYDVR0jBBgwFoAUo53m
>>>> H/naOU/AbuiRy5Wl2jHiCp8wHQYDVR0OBBYEFHCV3FyjjmYH28uBEMar58OoRX+g
>>>> MIGsBgNVHREEgaQwgaGCEmNsb3VkZmxhcmUtZG5zLmNvbYIUKi5jbG91ZGZsYXJl
>>>> LWRucy5jb22CD29uZS5vbmUub25lLm9uZYcEAQEBAYcEAQAAAYcEop+ENYcQJgZH
>>>> AEcAAAAAAAAAAAAREYcQJgZHAEcAAAAAAAAAAAAQAYcQJgZHAEcAAAAAAAAAAAAA
>>>> ZIcQJgZHAEcAAAAAAAAAAABkAIcEop8kAYcEop8uATAOBgNVHQ8BAf8EBAMCB4Aw
>>>> HQYDVR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMGkGA1UdHwRiMGAwLqAsoCqG
>>>> KGh0dHA6Ly9jcmwzLmRpZ2ljZXJ0LmNvbS9zc2NhLWVjYy1nMS5jcmwwLqAsoCqG
>>>> KGh0dHA6Ly9jcmw0LmRpZ2ljZXJ0LmNvbS9zc2NhLWVjYy1nMS5jcmwwTAYDVR0g
>>>> BEUwQzA3BglghkgBhv1sAQEwKjAoBggrBgEFBQcCARYcaHR0cHM6Ly93d3cuZGln
>>>> aWNlcnQuY29tL0NQUzAIBgZngQwBAgIwewYIKwYBBQUHAQEEbzBtMCQGCCsGAQUF
>>>> BzABhhhodHRwOi8vb2NzcC5kaWdpY2VydC5jb20wRQYIKwYBBQUHMAKGOWh0dHA6
>>>> Ly9jYWNlcnRzLmRpZ2ljZXJ0LmNvbS9EaWdpQ2VydEVDQ1NlY3VyZVNlcnZlckNB
>>>> LmNydDAMBgNVHRMBAf8EAjAAMIIBfgYKKwYBBAHWeQIEAgSCAW4EggFqAWgAdgCk
>>>> uQmQtBhYFIe7E6LMZ3AKPDWYBPkb37jjd80OyA3cEAAAAWiVHhSLAAAEAwBHMEUC
>>>> IQDlnoPeMXtFkRsy3Vs0eovk3ILKt01x6bgUdMlmQTFIvAIgcAn0lFSjiGzHm2eO
>>>> jDZJzMiP5Uaj0Jwub9GO8RkxkkoAdQCHdb/nWXz4jEOZX73zbv9WjUdWNv9KtWDB
>>>> tOr/XqCDDwAAAWiVHhVsAAAEAwBGMEQCIFC0n0JModeol8b/Qicxd5Blf/o7xOs/
>>>> Bk0j9hdc5N7jAiAQocYnHL9iMqTtFkh0vmSsII5NbiakM/2yDEXnwkPRvAB3ALvZ
>>>> 37wfinG1k5Qjl6qSe0c4V5UKq1LoGpCWZDaOHtGFAAABaJUeFJEAAAQDAEgwRgIh
>>>> AL3OPTBzOZpS5rS/uLzqMOiACCFQyY+mTJ+L0I9TcB3RAiEA4+SiPz0/5kFxvrk7
>>>> AKYKdvelgV1hiiPbM2YHY+/0BIkwCgYIKoZIzj0EAwIDaAAwZQIwez76hX2HTMur
>>>> /I3XRuwfdmVoa8J6ZVEVq+AZsE7DyQh7AV4WNLU+092BrPbnyVUFAjEAzUf5jdz1
>>>> pyc74lgOunC7LBE6cPtWbzfGpJiYyT/T+c5eIAwRYziKT0DKbaql7tiZ
>>>> -----END CERTIFICATE-----
>>>> subject=C = US, ST = California, L = San Francisco, O =
>>>> "Cloudflare, Inc.", CN = cloudflare-dns.com
>>>> 
>>>> issuer=C = US, O = DigiCert Inc, CN = DigiCert ECC Secure Server
>>>> CA
>>>> 
>>>> ---
>>>> No client certificate CA names sent
>>>> Peer signing digest: SHA256
>>>> Peer signature type: ECDSA
>>>> Server Temp Key: X25519, 253 bits
>>>> ---
>>>> SSL handshake has read 2787 bytes and written 421 bytes
>>>> Verification: OK
>>>> ---
>>>> New, TLSv1.3, Cipher is TLS_CHACHA20_POLY1305_SHA256
>>>> Server public key is 256 bit
>>>> Secure Renegotiation IS NOT supported
>>>> Compression: NONE
>>>> Expansion: NONE
>>>> No ALPN negotiated
>>>> Early data was not sent
>>>> Verify return code: 0 (ok)
>>>> ---
>>>> ---
>>>> Post-Handshake New Session Ticket arrived:
>>>> SSL-Session:
>>>>   Protocol  : TLSv1.3
>>>>   Cipher    : TLS_CHACHA20_POLY1305_SHA256
>>>>   Session-ID:
>>>> FAA394DF4959235034E350399A968F5C945D413F68CC5D29191B209900735C01
>>>>   Session-ID-ctx: 
>>>>   Resumption PSK:
>>>> 414F9C16B3D4845BC0592B35CC2D28DBD9B807BCBCB95125870379E1AAA480C7
>>>>   PSK identity: None
>>>>   PSK identity hint: None
>>>>   TLS session ticket lifetime hint: 21600 (seconds)
>>>>   TLS session ticket:
>>>>   0000 - 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00
>>>> 00   ................
>>>>   0010 - 8f 9b bb d1 0a 9e a6 0d-df d3 9d 7d 8f c1 f1
>>>> 6b   ...........}...k
>>>>   0020 - 00 80 31 55 77 a3 b3 5c-fe 90 11 fb 8c ef b1
>>>> 23   ..1Uw..\.......#
>>>>   0030 - 9c 88 83 b0 33 5d 84 d6-1a 75 db 68 67 fb 57
>>>> 3d   ....3]...u.hg.W=
>>>>   0040 - ef 71 6b 7f 22 ae fa bf-d7 0d 12 37 62 69 01
>>>> ff   .qk."......7bi..
>>>>   0050 - 5a 78 29 97 8e ab a4 8e-e0 83 ab 0f 63 fa b4
>>>> d9   Zx).........c...
>>>>   0060 - 3b 08 70 38 56 db 6a 43-8c d3 e4 de 5d 1e 7e
>>>> cb   ;.p8V.jC....].~.
>>>>   0070 - 82 63 08 cd 31 71 61 17-44 a1 98 87 8a a5 43
>>>> 06   .c..1qa.D.....C.
>>>>   0080 - d1 f8 aa a7 ba 3e 99 32-a9 f8 a6 14 46 bd a2
>>>> 0e   .....>.2....F...
>>>>   0090 - 74 79 fa 24 c5 5c a2 12-81 cb 2c 85 4b 91 c1
>>>> 1b   ty.$.\....,.K...
>>>>   00a0 - 7d c3 3d c9 6a 58 12 4e-41 b7 eb 29 9e b6 90
>>>> 07   }.=.jX.NA..)....
>>>>   00b0 - e1 92 dd 8d 44
>>>> 69                                 ....Di
>>>> 
>>>>   Start Time: 1549799117
>>>>   Timeout   : 7200 (sec)
>>>>   Verify return code: 0 (ok)
>>>>   Extended master secret: no
>>>>   Max Early Data: 0
>>>> ---
>>>> read R BLOCK
>>>> closed
>>>> 
>>>> 
>>>> Which seems strange to me since Cloudflair offers TLSv1.3 but
>>>> unbound initializes only TLSv1.2 .
>>>> 
>>>> Have check all working DoT servers from here --> 
>>>> https://dnsprivacy.org/wiki/display/DP/DNS+Privacy+Test+Servers
>>>> too,
>>>> but no TLSv1.3 at all...
>>>> 
>>>> 
>>>> Did someone have similar behaviors ?
>>>> 
>>>> Best,
>>>> 
>>>> Erik
>