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https://issues.apache.org/jira/browse/SSHD-1329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17739277#comment-17739277
]
Thomas Wolf commented on SSHD-1329:
-----------------------------------
Maybe this a red herring, but... perhaps check the crypto policies on your
Ubuntu 22.04. AFAIK Ubuntu 22.04 disables SHA1 signatures with RSA keys via
crypto policies, and that may affect also the JDK. See
[https://manpages.ubuntu.com/manpages/jammy/en/man8/update-crypto-policies.8.html]
. I don't quite see how that could lead to not being able to find or load the
key in the first place, but it's still something to check.
> SSH Public key authentication works with 2.9.2 but fails with 2.10.0
> --------------------------------------------------------------------
>
> Key: SSHD-1329
> URL: https://issues.apache.org/jira/browse/SSHD-1329
> Project: MINA SSHD
> Issue Type: Bug
> Affects Versions: 2.10.0
> Reporter: Tobias Gierke
> Priority: Major
> Attachments: failure_2.10.0.log, image-2023-06-26-17-10-43-547.png,
> sshd-bug-test.tgz, success_2.9.2.log
>
>
> After upgrading to Apache SSHD 2.10.0 we noticed that SSH public key
> authentication stopped working.
> On 2.9.2 the handshake looks like this:
> {code:java}
> 2023-06-19T13:12:18,405 [sshd-SshClient[1255b1d1]-nio2-thread-4|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> processUserAuth(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22]
> ) Received SSH_MSG_USERAUTH_FAILURE - partial=false,
> methods=publickey,gssapi-keyex,gssapi-with-mic,password
> 2023-06-19T13:12:18,405 [sshd-SshClient[1255b1d1]-nio2-thread-4|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> starti
> ng authentication mechanisms: client=[publickey, keyboard-interactive,
> password], server=[publickey, gssapi-keyex, gssapi-with-mic, password]
> 2023-06-19T13:12:18,405 [sshd-SshClient[1255b1d1]-nio2-thread-4|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> attempting method=publickey
> 2023-06-19T13:12:18,416 [sshd-SshClient[1255b1d1]-nio2-thread-4|] TRACE
> org.apache.sshd.common.config.keys.loader.pem.RSAPEMResourceKeyPairParser []
> - -----BEGIN RSA PRIVATE KEY----- [chunk #1](16/609)
> 30:82:02:5d:02:01:00:02:81:81:00:c1:a3:3a:25:23 0..].........:%#
> ..... {code}
> while on 2.10.0 the key is not found/loaded:
> {code:java}
> 2023-06-19T13:13:41,529 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientSessionImpl [] -
> doHandleMessage(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> process #5 SSH_MSG_USERAUTH_FAILURE
> 2023-06-19T13:13:41,529 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> processUserAuth(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> Received SSH_MSG_USERAUTH_FAILURE - partial=false,
> methods=publickey,gssapi-keyex,gssapi-with-mic,password
> 2023-06-19T13:13:41,529 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> starting authentication mechanisms: client=[publickey, keyboard-interactive,
> password], server=[publickey, gssapi-keyex, gssapi-with-mic, password]
> 2023-06-19T13:13:41,530 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> attempting method=publickey
> 2023-06-19T13:13:41,532 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.auth.pubkey.UserAuthPublicKey [] -
> resolveAttemptedPublicKeyIdentity(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])[ssh-connection]
> no more keys to send
> 2023-06-19T13:13:41,532 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22]) no
> initial request sent by method=publickey
> 2023-06-19T13:13:41,532 [sshd-SshClient[495083a0]-nio2-thread-6|] TRACE
> org.apache.sshd.client.auth.pubkey.UserAuthPublicKey [] -
> releaseKeys(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> closing
> UserAuthPublicKeyIterator[ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22]]
> 2023-06-19T13:13:41,532 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.auth.pubkey.UserAuthPublicKey [] -
> destroy(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])[ssh-connection]
> 2023-06-19T13:13:41,533 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])
> attempting method=password
> 2023-06-19T13:13:41,534 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.auth.password.UserAuthPassword [] -
> resolveAttemptedPassword(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22])[ssh-connection]
> no more passwords to send
> 2023-06-19T13:13:41,534 [sshd-SshClient[495083a0]-nio2-thread-6|] DEBUG
> org.apache.sshd.client.session.ClientUserAuthService [] -
> tryNext(ClientSessionImpl[r...@vmtobilocal.fritz.box/192.168.188.250:22]) no
> initial request sent by method=password {code}
> I've attached a Maven project that contains an almost-self-contained unit
> test that showcases the behaviour. For the test to work you'll need
> - to have some SSH server up & running
> - put the test's SSH public key (from src/test/resources/test_ssh_key.pub)
> into an authorized_keys file on the server
> - Adjust the test source code to use the right server name and user name (I
> used root)
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