Auth fail for methods 'publickey,password,keyboard-interactive'

[Praj777-am]

Seeing connect failures with Jsch version 0.2.18 whereas it works fine with 0.1.54 version , currently not able to get any host logs.
I have set PreferredAuthentications to PublicKey and PubkeyAcceptedAlgorithms -

Set PubkeyAcceptedAlgorithms algorithms as ssh-rsa,ssh-dss,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256

But I still see this issue, not sure what I might be missing here?

Remote version string: SSH-2.0-SSHD
 Local version string: SSH-2.0-JSCH_0.2.18
CheckCiphers: chacha20-poly1305@openssh.com
CheckKexes: sntrup761x25519-sha512@openssh.com,curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512
sntrup761x25519-sha512@openssh.com is not available.
curve25519-sha256 is not available.
curve25519-sha256@libssh.org is not available.
curve448-sha512 is not available.
CheckSignatures: ssh-ed25519,ssh-ed448
ssh-ed25519 is not available.
 ssh-ed448 is not available.
 SSH_MSG_KEXINIT sent
 SSH_MSG_KEXINIT received
server proposal: KEX algorithms: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1
server proposal: host key algorithms: ssh-rsa
server proposal: ciphers c2s: aes128-ctr,aes192-ctr,aes256-ctr
server proposal: ciphers s2c: aes128-ctr,aes192-ctr,aes256-ctr
 server proposal: MACs c2s: hmac-sha1,hmac-sha1-96,hmac-sha256,hmac-sha256@ssh.com,hmac-sha2-256,hmac-sha2-512
server proposal: MACs s2c: hmac-sha256,hmac-sha1,hmac-sha1-96,hmac-sha256@ssh.com,hmac-sha2-256,hmac-sha2-512
 server proposal: compression c2s: none,zlib
 server proposal: compression s2c: none,zlib
 server proposal: languages c2s:
server proposal: languages s2c:
 client proposal: KEX algorithms: diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c,kex-strict-c-v00@openssh.com
 client proposal: host key algorithms: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256
 client proposal: ciphers c2s: blowfish-cbc,3des-cbc,aes128-cbc,aes192-cbc,aes256-cbc,3des-ctr,aes256-ctc,arcfour,arcfour128,arcfour256,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
 client proposal: ciphers s2c: blowfish-cbc,3des-cbc,aes128-cbc,aes192-cbc,aes256-cbc,3des-ctr,aes256-ctc,arcfour,arcfour128,arcfour256,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
 client proposal: MACs c2s: hmac-md5,hmac-md5-96,hmac-sha1-96,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
client proposal: MACs s2c: hmac-md5,hmac-md5-96,hmac-sha1-96,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
client proposal: compression c2s: none
client proposal: compression s2c: none
 client proposal: languages c2s:
 client proposal: languages s2c:
 kex: algorithm: diffie-hellman-group-exchange-sha1
 kex: host key algorithm: ssh-rsa
kex: server->client cipher: aes128-ctr MAC: hmac-sha1-96 compression: none
 kex: client->server cipher: aes128-ctr MAC: hmac-sha1-96 compression: none
SSH_MSG_KEX_DH_GEX_REQUEST(2048<3072<8192) sent
 expecting SSH_MSG_KEX_DH_GEX_GROUP
SSH_MSG_KEX_DH_GEX_INIT sent
expecting SSH_MSG_KEX_DH_GEX_REPLY
ssh_rsa_verify: ssh-rsa signature true
 Permanently added 'host.test.com' (RSA) to the list of known hosts.
SSH_MSG_NEWKEYS sent
SSH_MSG_NEWKEYS received
SSH_MSG_SERVICE_REQUEST sent
SSH_MSG_SERVICE_ACCEPT received
SSH_MSG_SERVICE_ACCEPT received
SSH_MSG_SERVICE_ACCEPT received
 Authentications that can continue: publickey
Next authentication method: publickey
Caused by: com.jcraft.jsch.JSchException: Auth fail for methods 'publickey,password,keyboard-interactive'
        at com.jcraft.jsch.Session.connect(Session.java:520) ~[jsch-0.2.18.jar:0.2.18]
        ... 16 more

[norrisjeremy]

Hi @Praj777-am,

I suspect it will work if you do not include the rsa-sha2-512 & rsa-sha2-256 algorithms in your PubkeyAcceptedAlgorithms setting, as I suspect the server you are connecting to does not operate correctly when JSch attempts to authentication using these algorithms.

Thanks,
Jeremy

[marcjulianfleck]

Any news on this? We experiencing the same issue.