[openssh 0005173]: Bug in sshd when using ed25519 keys
Mantis Bug Tracker via bug-notifications
bug-notifications at lists.opencsw.org
Wed Jun 11 11:40:15 CEST 2014
A NOTE has been added to this issue.
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https://www.opencsw.org/mantis/view.php?id=5173
======================================================================
Reported By: schwindt
Assigned To: yann
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Project: openssh
Issue ID: 5173
Category: other
Reproducibility: always
Severity: major
Priority: normal
Status: feedback
======================================================================
Date Submitted: 2014-05-22 15:11 CEST
Last Modified: 2014-06-11 11:40 CEST
======================================================================
Summary: Bug in sshd when using ed25519 keys
Description:
Remember me reporting ed25519 keys not being generated ?
If only I had kept my mouth shut .)
The keys get generated but they can't be used.
On setting up a fresh machine, which consequently did not have the rsa host
key,
I was not able to connect to a machine having an ed25519 hostkey.
Removing the key from the server and knownhosts, modifying
/opt/csw/sbin/sshd.smf_wrapper not to generate keys,
restarting sshd -> everything changes back to normal.
This happens for solaris clients as well as e.g. archlinux clients.
======================================================================
----------------------------------------------------------------------
(0010860) schwindt (developer) - 2014-06-11 11:40
https://www.opencsw.org/mantis/view.php?id=5173#c10860
----------------------------------------------------------------------
The server :
schwindt at isg-1505 [/home/schwindt] /opt/csw/sbin/sshd -p 1025 -d -d -d
debug2: load_server_config: filename /etc/opt/csw/ssh/sshd_config
debug2: load_server_config: done config len = 289
debug2: parse_server_config: config /etc/opt/csw/ssh/sshd_config len 289
debug3: /etc/opt/csw/ssh/sshd_config:54 setting AuthorizedKeysFile
.ssh/authorized_keys
debug3: /etc/opt/csw/ssh/sshd_config:99 setting UsePAM yes
debug3: /etc/opt/csw/ssh/sshd_config:104 setting X11Forwarding yes
debug3: /etc/opt/csw/ssh/sshd_config:108 setting PrintMotd no
debug3: /etc/opt/csw/ssh/sshd_config:112 setting UsePrivilegeSeparation
sandbox
debug3: /etc/opt/csw/ssh/sshd_config:128 setting Subsystem sftp
/opt/csw/libexec/sftp-server
debug1: sshd version OpenSSH_6.6, OpenSSL 1.0.1g 7 Apr 2014
debug3: Incorrect RSA1 identifier
debug1: key_parse_private2: missing begin marker
debug1: read PEM private key done: type RSA
debug3: Incorrect RSA1 identifier
debug3: Could not load "/etc/opt/csw/ssh/ssh_host_rsa_key" as a RSA1 public
key
debug1: private host key: https://www.opencsw.org/mantis/view.php?id=0 type 1
RSA
debug3: Incorrect RSA1 identifier
debug1: key_parse_private2: missing begin marker
debug1: read PEM private key done: type DSA
debug3: Incorrect RSA1 identifier
debug3: Could not load "/etc/opt/csw/ssh/ssh_host_dsa_key" as a RSA1 public
key
debug1: private host key: https://www.opencsw.org/mantis/view.php?id=1 type 2
DSA
debug3: Incorrect RSA1 identifier
debug1: key_parse_private2: missing begin marker
debug1: read PEM private key done: type RSA
debug3: Incorrect RSA1 identifier
debug3: Could not load "/etc/opt/csw/ssh/ssh_host_ecdsa_key" as a RSA1
public key
debug1: private host key: https://www.opencsw.org/mantis/view.php?id=2 type 1
RSA
debug3: Incorrect RSA1 identifier
debug3: Incorrect RSA1 identifier
debug3: Could not load "/etc/opt/csw/ssh/ssh_host_ed25519_key" as a RSA1
public key
debug1: private host key: https://www.opencsw.org/mantis/view.php?id=3 type 4
ED25519
debug1: rexec_argv[0]='/opt/csw/sbin/sshd'
debug1: rexec_argv[1]='-p'
debug1: rexec_argv[2]='1025'
debug1: rexec_argv[3]='-d'
debug1: rexec_argv[4]='-d'
debug1: rexec_argv[5]='-d'
debug2: fd 4 setting O_NONBLOCK
debug3: sock_set_v6only: set socket 4 IPV6_V6ONLY
debug1: Bind to port 1025 on ::.
Server listening on :: port 1025.
debug2: fd 5 setting O_NONBLOCK
debug1: Bind to port 1025 on 0.0.0.0.
Server listening on 0.0.0.0 port 1025.
debug1: fd 6 clearing O_NONBLOCK
debug1: Server will not fork when running in debugging mode.
debug3: send_rexec_state: entering fd = 11 config len 289
debug3: ssh_msg_send: type 0
debug3: send_rexec_state: done
debug1: rexec start in 6 out 6 newsock 6 pipe -1 sock 11
debug1: inetd sockets after dupping: 4, 4
Connection from 192.168.15.105 port 50700 on 192.168.15.105 port 1025
debug1: Client protocol version 2.0; client software version OpenSSH_6.6
debug1: match: OpenSSH_6.6 pat OpenSSH* compat 0x04000000
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_6.6
debug2: fd 4 setting O_NONBLOCK
debug2: Network child is on pid 28142
debug3: preauth child monitor started
debug3: privsep user:group 60003:60003 [preauth]
debug1: permanently_set_uid: 60003/60003 [preauth]
debug1: list_hostkey_types: ssh-rsa,ssh-dss,ssh-rsa,ssh-ed25519 [preauth]
debug1: SSH2_MSG_KEXINIT sent [preauth]
debug1: SSH2_MSG_KEXINIT received [preauth]
debug2: kex_parse_kexinit:
curve25519-sha256 at libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
[preauth]
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss,ssh-rsa,ssh-ed25519 [preauth]
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm at openssh.com,aes256-gcm at openssh.com,chacha20-poly1305 at openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
[preauth]
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm at openssh.com,aes256-gcm at openssh.com,chacha20-poly1305 at openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
[preauth]
debug2: kex_parse_kexinit:
hmac-md5-etm at openssh.com,hmac-sha1-etm at openssh.com,umac-64-etm at openssh.com,umac-128-etm at openssh.com,hmac-sha2-256-etm at openssh.com,hmac-sha2-512-etm at openssh.com,hmac-ripemd160-etm at openssh.com,hmac-sha1-96-etm at openssh.com,hmac-md5-96-etm at openssh.com,hmac-md5,hmac-sha1,umac-64 at openssh.com,umac-128 at openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
[preauth]
debug2: kex_parse_kexinit:
hmac-md5-etm at openssh.com,hmac-sha1-etm at openssh.com,umac-64-etm at openssh.com,umac-128-etm at openssh.com,hmac-sha2-256-etm at openssh.com,hmac-sha2-512-etm at openssh.com,hmac-ripemd160-etm at openssh.com,hmac-sha1-96-etm at openssh.com,hmac-md5-96-etm at openssh.com,hmac-md5,hmac-sha1,umac-64 at openssh.com,umac-128 at openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
[preauth]
debug2: kex_parse_kexinit: none,zlib at openssh.com [preauth]
debug2: kex_parse_kexinit: none,zlib at openssh.com [preauth]
debug2: kex_parse_kexinit: [preauth]
debug2: kex_parse_kexinit: [preauth]
debug2: kex_parse_kexinit: first_kex_follows 0 [preauth]
debug2: kex_parse_kexinit: reserved 0 [preauth]
debug2: kex_parse_kexinit:
curve25519-sha256 at libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
[preauth]
debug2: kex_parse_kexinit:
ecdsa-sha2-nistp256-cert-v01 at openssh.com,ecdsa-sha2-nistp384-cert-v01 at openssh.com,ecdsa-sha2-nistp521-cert-v01 at openssh.com,ssh-ed25519-cert-v01 at openssh.com,ssh-rsa-cert-v01 at openssh.com,ssh-dss-cert-v01 at openssh.com,ssh-rsa-cert-v00 at openssh.com,ssh-dss-cert-v00 at openssh.com,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,ssh-ed25519,ssh-rsa,ssh-dss
[preauth]
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm at openssh.com,aes256-gcm at openssh.com,chacha20-poly1305 at openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
[preauth]
debug2: kex_parse_kexinit:
aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm at openssh.com,aes256-gcm at openssh.com,chacha20-poly1305 at openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc at lysator.liu.se
[preauth]
debug2: kex_parse_kexinit:
hmac-md5-etm at openssh.com,hmac-sha1-etm at openssh.com,umac-64-etm at openssh.com,umac-128-etm at openssh.com,hmac-sha2-256-etm at openssh.com,hmac-sha2-512-etm at openssh.com,hmac-ripemd160-etm at openssh.com,hmac-sha1-96-etm at openssh.com,hmac-md5-96-etm at openssh.com,hmac-md5,hmac-sha1,umac-64 at openssh.com,umac-128 at openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
[preauth]
debug2: kex_parse_kexinit:
hmac-md5-etm at openssh.com,hmac-sha1-etm at openssh.com,umac-64-etm at openssh.com,umac-128-etm at openssh.com,hmac-sha2-256-etm at openssh.com,hmac-sha2-512-etm at openssh.com,hmac-ripemd160-etm at openssh.com,hmac-sha1-96-etm at openssh.com,hmac-md5-96-etm at openssh.com,hmac-md5,hmac-sha1,umac-64 at openssh.com,umac-128 at openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160 at openssh.com,hmac-sha1-96,hmac-md5-96
[preauth]
debug2: kex_parse_kexinit: none,zlib at openssh.com,zlib [preauth]
debug2: kex_parse_kexinit: none,zlib at openssh.com,zlib [preauth]
debug2: kex_parse_kexinit: [preauth]
debug2: kex_parse_kexinit: [preauth]
debug2: kex_parse_kexinit: first_kex_follows 0 [preauth]
debug2: kex_parse_kexinit: reserved 0 [preauth]
debug2: mac_setup: setup hmac-md5-etm at openssh.com [preauth]
debug1: kex: client->server aes128-ctr hmac-md5-etm at openssh.com none
[preauth]
debug2: mac_setup: setup hmac-md5-etm at openssh.com [preauth]
debug1: kex: server->client aes128-ctr hmac-md5-etm at openssh.com none
[preauth]
debug1: expecting SSH2_MSG_KEX_ECDH_INIT [preauth]
debug3: mm_key_sign entering [preauth]
debug3: mm_request_send entering: type 6 [preauth]
debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN [preauth]
debug3: mm_request_receive_expect entering: type 7 [preauth]
debug3: mm_request_receive entering [preauth]
debug3: mm_request_receive entering
debug3: monitor_read: checking request 6
debug3: mm_answer_sign
debug3: mm_answer_sign: signature 812e1f8(83)
debug3: mm_request_send entering: type 7
debug2: monitor_read: 6 used once, disabling now
debug2: kex_derive_keys [preauth]
debug2: set_newkeys: mode 1 [preauth]
debug1: SSH2_MSG_NEWKEYS sent [preauth]
debug1: expecting SSH2_MSG_NEWKEYS [preauth]
Connection closed by 192.168.15.105 [preauth]
debug1: do_cleanup [preauth]
debug3: PAM: sshpam_thread_cleanup entering [preauth]
debug3: mm_request_receive entering
debug1: do_cleanup
debug3: PAM: sshpam_thread_cleanup entering
debug1: Killing privsep child 28142
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