I haven't search for the information as Marc did. But when I try to connect it says: Permission denied (publickey).
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1522190 Title: Permission denied (publickey) whereas the public key has been inserted into ~/.ssh/authorized_keys: "usePAM no" issue Status in openssh package in Ubuntu: Confirmed Bug description: Security vulnerability because I cannot use SSH to connect to my Ubuntu host from a Ubuntu guest. Is Telnet the last option? However, I can connect through the same port at the same IP address from a Windows 10 guest using the latest WinSCP software. OpenSSH Server: 4.2.0-19-generic #23-Ubuntu SMP Wed Nov 11 11:39:30 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux with openssh-server 6.9p1-2 OpenSSH client: 4.2.0-19-generic #23-Ubuntu SMP Wed Nov 11 11:39:30 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux with openssh-client 6.9p1-2 Trace of the failed SSH connection: ---------------------------------------------------- root@stack:~/.ssh# ssh -v -p xxxx root@172.19.100.1 OpenSSH_6.9p1 Ubuntu-2, OpenSSL 1.0.2d 9 Jul 2015 debug1: Reading configuration data /etc/ssh/ssh_config debug1: /etc/ssh/ssh_config line 19: Applying options for * debug1: Connecting to 172.19.100.1 [172.19.100.1] port xxxx. debug1: Connection established. debug1: key_load_private_type: No such file or directory debug1: key_load_private_cert: No such file or directory debug1: key_load_private_cert: No such file or directory debug1: key_load_private_cert: No such file or directory debug1: key_load_private_cert: No such file or directory debug1: key_load_private_type: No such file or directory debug1: key_load_private_type: No such file or directory debug1: permanently_set_uid: 0/0 debug1: identity file /root/.ssh/id_rsa type 1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_rsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_dsa-cert type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa type -1 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ecdsa-cert type -1 debug1: identity file /root/.ssh/id_ed25519 type 4 debug1: key_load_public: No such file or directory debug1: identity file /root/.ssh/id_ed25519-cert type -1 debug1: Enabling compatibility mode for protocol 2.0 debug1: Local version string SSH-2.0-OpenSSH_6.9p1 Ubuntu-2 debug1: Remote protocol version 2.0, remote software version OpenSSH_6.9p1 Ubuntu-2 debug1: match: OpenSSH_6.9p1 Ubuntu-2 pat OpenSSH* compat 0x04000000 debug1: Authenticating to 172.19.100.1:xxxx as 'root' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: server->client aes192-ctr hmac-sha2-256-...@openssh.com none debug1: kex: client->server aes192-ctr hmac-sha2-256-...@openssh.com none debug1: SSH2_MSG_KEX_DH_GEX_REQUEST(1024<8192<8192) sent debug1: got SSH2_MSG_KEX_DH_GEX_GROUP debug1: SSH2_MSG_KEX_DH_GEX_INIT sent debug1: got SSH2_MSG_KEX_DH_GEX_REPLY debug1: Server host key: ssh-ed25519 SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx debug1: checking without port identifier The authenticity of host '[172.19.100.1]:xxxx ([172.19.100.1]:xxxx)' can't be established. ED25519 key fingerprint is SHA256:xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '[172.19.100.1]:xxxx' (ED25519) to the list of known hosts. debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: Roaming not allowed by server debug1: SSH2_MSG_SERVICE_REQUEST sent debug1: SSH2_MSG_SERVICE_ACCEPT received ************************************************************************* NOTICE TO USERS This computer system is the private property of its owner, whether individual, corporate or government. It is for authorized use only. Users (authorized or unauthorized) have no explicit or implicit expectation of privacy. Any or all uses of this system and all files on this system may be intercepted, monitored, recorded, copied, audited, inspected, and disclosed to your employer, to authorized site, government, and law enforcement personnel, as well as authorized officials of government agencies, both domestic and foreign. By using this system, the user consents to such interception, monitoring, recording, copying, auditing, inspection, and disclosure at the discretion of such personnel or officials. Unauthorized or improper use of this system may result in civil and criminal penalties and administrative or disciplinary action, as appropriate. By continuing to use this system you indicate your awareness of and consent to these terms and conditions of use. LOG OFF IMMEDIATELY if you do not agree to the conditions stated in this warning. ************************************************************************* debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering RSA public key: /root/.ssh/id_rsa debug1: Authentications that can continue: publickey debug1: Trying private key: /root/.ssh/id_dsa debug1: Trying private key: /root/.ssh/id_ecdsa debug1: Offering ED25519 public key: /root/.ssh/id_ed25519 debug1: Authentications that can continue: publickey debug1: No more authentication methods to try. Permission denied (publickey). However; on the guest: ---------------------------------- root@stack:~/.ssh# ls -al total 40 drwx------ 2 root root 4096 Dec 2 23:58 . drwx------ 20 root root 4096 Nov 22 19:47 .. -rw------- 1 root root 2 Dec 2 23:58 authorized_keys -rw------- 1 root root 464 Dec 2 23:39 id_ed25519 -rw-r--r-- 1 root root 99 Dec 2 23:39 id_ed25519.pub -rw------- 1 root root 1766 Dec 2 23:32 id_rsa -rw-r--r-- 1 root root 399 Dec 2 23:32 id_rsa.pub -rw-r--r-- 1 root root 142 Dec 2 23:59 known_hosts On the server: --------------------- root@msi-ge60-ubuntu:/etc/ssh# ls -al total 308 drwx------ 2 root root 4096 Dec 3 00:22 . drwxr-xr-x 192 root root 12288 Dec 2 23:24 .. -rw------- 1 root root 1251 Jan 24 2015 banner-warning.txt -rw------- 1 root root 263002 Sep 11 11:33 moduli -rw------- 1 root root 2448 Dec 2 23:53 ssh_config -rw------- 1 root root 3554 Dec 2 18:17 sshd_config -rw------- 1 root root 411 Dec 2 18:21 ssh_host_ed25519_key -rw-r--r-- 1 root root 102 Dec 2 18:21 ssh_host_ed25519_key.pub -rw------- 1 root root 1675 Nov 25 17:00 ssh_host_rsa_key -rw------- 1 root root 402 Nov 25 17:00 ssh_host_rsa_key.pub -rw------- 1 root root 338 Oct 24 22:37 ssh_import_id -rw------- 1 root root 0 Nov 25 19:41 ssh_known_hosts and regarding the authorized keys for the root account: root@msi-ge60-ubuntu:~/.ssh# cat authorized_keys ssh-rsa xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx KVM-Windows-10 ssh-rsa xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx root@KVM-DevStack ssh-ed25519 xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx root@KVM- DevStack To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssh/+bug/1522190/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
