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Damien Mascord

2002-Jul-27 11:38 UTC

OpenSSH 3.4p1 on SourceMage client ssh fails

Hi guys,

I have a OpenSSH 3.4p1 installation on a SourceMage box, and I am trying to 
connect to a OpenSSH 3.3p1 installation on a RedHat 7.x box and any other 
machine.

The client fails with a "Host key verification failed."

Any other client connects correctly to the RedHat box, and any other server 
that I try to connect to from the SourceMage box fails with the same error 
message.  The output of the debug for ssh client and ssh are as attached.

I can connect to the SourceMage box fine from any client, though cannot 
connect outwards... any ideas?

Damien
---------------------------

The configure that I used for OpenSSH 3.4p1 on the SourceMage box is as 
follows:
./configure  --prefix=/usr            \
                --sysconfdir=/etc/ssh    \
                --with-md5-passwords     \
                --mandir=/usr/share/man  \

I am also using OpenSSL 0.9.6d.

$ openssl version
OpenSSL 0.9.6d 9 May 2002

The debug output on the 3.3p1 RedHat box:
sshd -d -d -d -p 4022
debug1: sshd version OpenSSH_3.3
debug1: private host key: #0 type 0 RSA1
debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key.
debug1: read PEM private key done: type RSA
debug1: private host key: #1 type 1 RSA
debug3: Not a RSA1 key file /etc/ssh/ssh_host_dsa_key.
debug1: read PEM private key done: type DSA
debug1: private host key: #2 type 2 DSA
socket: Address family not supported by protocol
debug1: Bind to port 4022 on 0.0.0.0.
Server listening on 0.0.0.0 port 4022.
Generating 768 bit RSA key.
RSA key generation complete.
debug1: Server will not fork when running in debugging mode.
Connection from 218.186.116.42 port 36256
debug1: Client protocol version 2.0; client software version OpenSSH_3.4p1
debug1: match: OpenSSH_3.4p1 pat OpenSSH*
Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-1.99-OpenSSH_3.3
debug2: Network child is on pid 29415
debug3: preauth child monitor started
debug3: mm_request_receive entering
debug3: privsep user:group 74:74
debug1: list_hostkey_types: ssh-rsa,ssh-dss
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: server->client aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST received
debug3: mm_request_send entering: type 0
debug3: mm_choose_dh: waiting for MONITOR_ANS_MODULI
debug3: mm_request_receive_expect entering: type 1
debug3: mm_request_receive entering
debug3: monitor_read: checking request 0
debug3: mm_answer_moduli: got parameters: 1024 2048 8192
debug3: mm_request_send entering: type 1
debug2: monitor_read: 0 used once, disabling now
debug3: mm_request_receive entering
debug3: mm_choose_dh: remaining 0
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug1: dh_gen_key: priv key bits set: 132/256
debug1: bits set: 1566/3191
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug1: bits set: 1626/3191
debug3: mm_key_sign entering
debug3: mm_request_send entering: type 4
debug3: monitor_read: checking request 4
debug3: mm_answer_sign
debug3: mm_key_sign: waiting for MONITOR_ANS_SIGN
debug3: mm_request_receive_expect entering: type 5
debug3: mm_request_receive entering
debug3: mm_answer_sign: signature 0x80a09a0(143)
debug3: mm_request_send entering: type 5
debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
debug1: kex_derive_keys
debug1: newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: waiting for SSH2_MSG_NEWKEYS
debug2: monitor_read: 4 used once, disabling now
debug3: mm_request_receive entering
Connection closed by 218.186.116.42
debug1: Calling cleanup 0x806e1a0(0x0)
debug1: Calling cleanup 0x806e1a0(0x0)


For the 3.3p1 Redhat box:
ssh -v -v -v tusker@<hostname> -p 4022
OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090604f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to grim.optus.nu [211.28.94.42] port 4022.
debug1: Connection established.
debug1: identity file /home/tusker/.ssh/identity type -1
debug1: identity file /home/tusker/.ssh/id_rsa type -1
debug1: identity file /home/tusker/.ssh/id_dsa type -1
debug1: Remote protocol version 1.99, remote software version OpenSSH_3.3
debug1: match: OpenSSH_3.3 pat OpenSSH*
Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.4p1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit: none
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: kex_parse_kexinit: 
diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
debug2: kex_parse_kexinit: ssh-rsa,ssh-dss
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,arcfour,aes192-cbc,aes256-cbc,rijndael-cbc
at lysator.liu.se
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: 
hmac-md5,hmac-sha1,hmac-ripemd160,hmac-ripemd160 at
openssh.com,hmac-sha1-96,hmac-md5-96
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit: none,zlib
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit:
debug2: kex_parse_kexinit: first_kex_follows 0
debug2: kex_parse_kexinit: reserved 0
debug2: mac_init: found hmac-md5
debug1: kex: server->client aes128-cbc hmac-md5 none
debug2: mac_init: found hmac-md5
debug1: kex: client->server aes128-cbc hmac-md5 none
debug1: SSH2_MSG_KEX_DH_GEX_REQUEST sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_GROUP
debug1: dh_gen_key: priv key bits set: 131/256
debug1: bits set: 1626/3191
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /home/tusker/.ssh/known_hosts
debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts
debug3: check_host_in_hostfile: filename /home/tusker/.ssh/known_hosts
debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts
Host key verification failed.
debug1: Calling cleanup 0x8068fb0(0x0)



For a 1.2.26 SSH box:
ssh -v -v -v tusker@<hostname>
OpenSSH_3.4p1, SSH protocols 1.5/2.0, OpenSSL 0x0090604f
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Rhosts Authentication disabled, originating port will not be trusted.
debug1: ssh_connect: needpriv 0
debug1: Connecting to disorder.com.au [216.94.9.84] port 22.
debug1: Connection established.
debug1: identity file /home/tusker/.ssh/identity type -1
debug1: identity file /home/tusker/.ssh/id_rsa type -1
debug1: identity file /home/tusker/.ssh/id_dsa type -1
debug1: Remote protocol version 1.5, remote software version 1.2.26
debug1: match: 1.2.26 pat 1.2.1*,1.2.2*,1.2.3*
debug1: Local version string SSH-1.5-OpenSSH_3.4p1
debug1: Waiting for server public key.
debug1: Received server public key (768 bits) and host key (1024 bits).
debug3: check_host_in_hostfile: filename /home/tusker/.ssh/known_hosts
debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts
debug3: check_host_in_hostfile: filename /home/tusker/.ssh/known_hosts
debug3: check_host_in_hostfile: filename /etc/ssh/ssh_known_hosts
Host key verification failed.
debug1: Calling cleanup 0x8068fb0(0x0)

Gert Doering

2002-Jul-28 10:02 UTC

head link

OpenSSH 3.4p1 on SourceMage client ssh fails

Hi,

On Sat, Jul 27, 2002 at 07:38:28PM +0800, Damien Mascord
wrote:> I have a OpenSSH 3.4p1 installation on a SourceMage box, and I am trying to
> connect to a OpenSSH 3.3p1 installation on a RedHat 7.x box and any other 
> machine.
> 
> The client fails with a "Host key verification failed."

Damien Mascord

2002-Jul-28 13:47 UTC

head link

OpenSSH 3.4p1 on SourceMage client ssh fails

Gert,

ahh!

non world writeable /dev/tty* was the issue...

Thanks for the apt answer... any reason why this wasn't picked up on the 
debug or verbose??

Damien

At 12:02 PM 28/07/2002 +0200, Gert Doering wrote:>Hi,
>
>On Sat, Jul 27, 2002 at 07:38:28PM +0800, Damien Mascord wrote:
> > I have a OpenSSH 3.4p1 installation on a SourceMage box, and I am 
> trying to
> > connect to a OpenSSH 3.3p1 installation on a RedHat 7.x box and any
other
> > machine.
> >
> > The client fails with a "Host key verification failed."
>
> >From the debug, it seems as if the client is not asking you to accept
an
>(yet-unknown) server key, but just checking all possible locations, not
>finding the key, and giving up.
>
>I have seen a similar effect on a system that had a /dev/tty entry that
>was not world-writeable (thus the ssh client couldn't open it to ask for
>a confirmation).
>
>The effect will also happen if you have "StrictHostKeyChecking
yes" in
>ssh_config - set that to "ask", otherwise it will fail if the key
isn't
>known in advance.
>
>gert
>--
>USENET is *not* the non-clickable part of WWW!
> 
>//www.muc.de/~gert/
>Gert Doering - Munich, Germany                             gert at
greenie.muc.de
>fax: +49-89-35655025                        gert.doering at
physik.tu-muenchen.de
>_______________________________________________
>openssh-unix-dev at mindrot.org mailing list
>http://www.mindrot.org/mailman/listinfo/openssh-unix-dev

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