SecurID authentication for 3.6.1p2 with privsep

J S vervoom at hotmail.com
Wed Jun 11 23:00:25 EST 2003 

Thanks for your reply Vaclav. I've applied your patch and compiled openssh. 
If I do normal ssh that works fine, but if I try sftp it fails. I've tried 
various settings in the sshd_config but with no luck. I'm guessing it could 
be something to do with the version of ACE I'm using though if that were the 
case I would have expected to see an error during the compile.

Here's my sshd_config, sshd and ssh verbose for the sftp. Would you mind 
taking a quick look and telling me if you can spot anything I'm doing wrong 
please?

Thanks,

JS.

$ cat /usr/ace/sdace.txt
ACE/Server 4.1.097 Fri Apr  7 10:43:27 EDT 2000


Port 5065
Protocol 2
#ListenAddress 0.0.0.0
#ListenAddress ::

# HostKey for protocol version 1
# HostKey /etc/ssh/ssh_host_key
# HostKeys for protocol version 2
HostKey /etc/ssh/ssh_host_rsa_key
HostKey /etc/ssh/ssh_host_dsa_key

# Lifetime and size of ephemeral version 1 server key
#KeyRegenerationInterval 3600
#ServerKeyBits 768

# Logging
#obsoletes QuietMode and FascistLogging
#SyslogFacility AUTH
#LogLevel INFO

# Authentication:
#LoginGraceTime 600
PermitRootLogin yes
#StrictModes yes

#RSAAuthentication yes
PubkeyAuthentication no
#AuthorizedKeysFile     .ssh/authorized_keys

# rhosts authentication should not be used
#RhostsAuthentication no
# Don't read the user's ~/.rhosts and ~/.shosts files
# For this to work you will also need host keys in /etc/ssh/ssh_known_hosts
#RhostsRSAAuthentication no
# similar for protocol version 2
#HostbasedAuthentication no
# Change to yes if you don't trust ~/.ssh/known_hosts for
# RhostsRSAAuthentication and HostbasedAuthentication
#IgnoreUserKnownHosts no

# To disable tunneled clear text passwords, change to no here!
PasswordAuthentication yes
PermitEmptyPasswords yes

# Change to no to disable s/key passwords
ChallengeResponseAuthentication yes

# Kerberos options
#KerberosAuthentication no
#KerberosOrLocalPasswd yes
#KerberosTicketCleanup yes

#AFSTokenPassing no

# Kerberos TGT Passing only works with the AFS kaserver
#KerberosTgtPassing no

# Set this to 'yes' to enable PAM keyboard-interactive authentication
# Warning: enabling this may bypass the setting of 'PasswordAuthentication'
#PAMAuthenticationViaKbdInt no
KbdInteractiveAuthentication yes

# SecurID options
SDConfRecDir /usr/ace/data
SecurIDAuthentication yes

X11Forwarding yes
#X11DisplayOffset 10
#X11UseLocalhost yes
PrintMotd no
PrintLastLog yes
#KeepAlive yes
UseLogin no
UsePrivilegeSeparation no
Compression no

#MaxStartups 10
# no default banner path
#Banner /some/path
#VerifyReverseMapping no

# override default of no subsystems
Subsystem       sftp    /opt/local/openssh/libexec/sftp-server





# ./sshd -d -d -d -f ../etc/sshd_config
debug3: Seeding PRNG from /opt/local/openssh-3.6.1p2/libexec/ssh-rand-helper
debug2: read_server_config: filename ../etc/sshd_config
debug1: sshd version OpenSSH_3.6.1p2
debug3: Not a RSA1 key file /etc/ssh/ssh_host_rsa_key.
debug1: read PEM private key done: type RSA
debug1: private host key: #0 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: #1 type 2 DSA
debug1: Bind to port 5065 on 0.0.0.0.
Server listening on 0.0.0.0 port 5065.
debug1: Server will not fork when running in debugging mode.
Connection from 161.2.66.28 port 61123
debug1: Client protocol version 2.0; client software version OpenSSH_3.6.1p2
debug1: match: OpenSSH_3.6.1p2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.6.1p2
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
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: 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
debug1: SSH2_MSG_KEX_DH_GEX_GROUP sent
debug2: dh_gen_key: priv key bits set: 118/256
debug2: bits set: 1559/3191
debug1: expecting SSH2_MSG_KEX_DH_GEX_INIT
debug2: bits set: 1600/3191
debug1: SSH2_MSG_KEX_DH_GEX_REPLY sent
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: KEX done
debug1: userauth-request for user u752359 service ssh-connection method none
debug1: attempt 0 failures 0
debug2: input_userauth_request: setting up authctxt for u752359
debug1: Starting up PAM with username "u752359"
debug3: Trying to reverse map address 161.2.66.28.
debug1: PAM setting rhost to "smpd9"
debug2: input_userauth_request: try method none
debug1: PAM password authentication accepted for u752359
debug2: pam_acct_mgmt() = 0
Accepted none for u752359 from 161.2.66.28 port 61123 ssh2
debug1: Entering interactive session for SSH2.
debug1: fd 9 setting O_NONBLOCK
debug1: fd 10 setting O_NONBLOCK
debug1: server_init_dispatch_20
debug1: server_input_channel_open: ctype session rchan 0 win 131072 max 
32768
debug1: input_session_request
debug1: channel 0: new [server-session]
debug1: session_new: init
debug1: session_new: session 0
debug1: session_open: channel 0
debug1: session_open: session 0: link with channel 0
debug1: server_input_channel_open: confirm session
debug1: server_input_channel_req: channel 0 request subsystem reply 1
debug1: session_by_channel: session 0 channel 0
debug1: session_input_channel_req: session 0 req subsystem
subsystem request for sftp
debug1: subsystem: exec() /opt/local/openssh/libexec/sftp-server
debug1: PAM establishing creds
debug1: fd 12 setting O_NONBLOCK
debug2: fd 12 is O_NONBLOCK
debug1: channel 0: read<=0 rfd 12 len 0
debug1: channel 0: read failed
debug1: channel 0: close_read
debug1: channel 0: input open -> drain
debug1: channel 0: ibuf empty
debug1: channel 0: send eof
debug1: channel 0: input drain -> closed
debug1: Received SIGCHLD.
debug1: session_by_pid: pid 10935
debug1: session_exit_message: session 0 channel 0 pid 10935
debug1: channel 0: request exit-status
debug1: session_exit_message: release channel 0
debug1: channel 0: write failed
debug1: channel 0: close_write
debug1: channel 0: output open -> closed
debug1: session_close: session 0 pid 10935
debug1: channel 0: send close
debug3: channel 0: will not send data after close
debug2: notify_done: reading
debug3: channel 0: will not send data after close
debug1: channel 0: rcvd close
debug3: channel 0: will not send data after close
debug1: channel 0: is dead
debug1: channel 0: garbage collecting
debug1: channel_free: channel 0: server-session, nchannels 1
debug3: channel_free: status: The following connections are open:\015
  #0 server-session (t4 r0 i3/0 o3/0 fd 12/12)\015

debug3: channel_close_fds: channel 0: r 12 w 12 e -1
Connection closed by 161.2.66.28
Closing connection to 161.2.66.28
debug1: Cannot delete credentials[7]: Permission denied




$ ./sftp -v -v -v -o port=5065 u752359 at smpd9
Connecting to smpd9...
OpenSSH_3.6.1p2, SSH protocols 1.5/2.0, OpenSSL 0x0090702f
debug1: Reading configuration data /opt/local/openssh-3.6.1p2/etc/ssh_config
debug3: Seeding PRNG from /opt/local/openssh-3.6.1p2/libexec/ssh-rand-helper
debug1: Rhosts Authentication disabled, originating port will not be 
trusted.
debug2: ssh_connect: needpriv 0
debug1: Connecting to smpd9 [161.2.66.28] port 5065.
debug1: Connection established.
debug1: identity file /home/u752359/.ssh/id_rsa type -1
debug3: Not a RSA1 key file /home/u752359/.ssh/id_dsa.
debug2: key_type_from_name: unknown key type '-----BEGIN'
debug3: key_read: missing keytype
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug3: key_read: missing whitespace
debug2: key_type_from_name: unknown key type '-----END'
debug3: key_read: missing keytype
debug1: identity file /home/u752359/.ssh/id_dsa type -1
debug1: Remote protocol version 2.0, remote software version OpenSSH_3.6.1p2
debug1: match: OpenSSH_3.6.1p2 pat OpenSSH*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.6.1p2
debug3: RNG is ready, skipping seeding
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: 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
debug2: dh_gen_key: priv key bits set: 129/256
debug2: bits set: 1600/3191
debug1: SSH2_MSG_KEX_DH_GEX_INIT sent
debug1: expecting SSH2_MSG_KEX_DH_GEX_REPLY
debug3: check_host_in_hostfile: filename /home/u752359/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 4
debug3: check_host_in_hostfile: filename /home/u752359/.ssh/known_hosts
debug3: check_host_in_hostfile: match line 4
debug1: Host 'smpd9' is known and matches the RSA host key.
debug1: Found key in /home/u752359/.ssh/known_hosts:4
debug2: bits set: 1559/3191
debug1: ssh_rsa_verify: signature correct
debug2: kex_derive_keys
debug2: set_newkeys: mode 1
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug2: set_newkeys: mode 0
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug2: service_accept: ssh-userauth
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentication succeeded (none).
debug1: fd 6 setting O_NONBLOCK
debug2: fd 7 is O_NONBLOCK
debug1: channel 0: new [client-session]
debug3: ssh_session2_open: channel_new: 0
debug2: channel 0: send open
debug1: Entering interactive session.
debug2: callback start
debug2: ssh_session2_setup: id 0
debug1: Sending subsystem: sftp
debug1: channel 0: request subsystem
debug2: callback done
debug1: channel 0: open confirm rwindow 0 rmax 32768
debug2: channel 0: rcvd adjust 131072
debug1: channel 0: rcvd eof
debug1: channel 0: output open -> drain
debug1: channel 0: obuf empty
debug1: channel 0: close_write
debug1: channel 0: output drain -> closed
debug1: client_input_channel_req: channel 0 rtype exit-status reply 0
debug1: channel 0: rcvd close
debug1: channel 0: close_read
debug1: channel 0: input open -> closed
debug3: channel 0: will not send data after close
debug1: channel 0: almost dead
debug1: channel 0: gc: notify user
debug1: channel 0: gc: user detached
debug1: channel 0: send close
debug1: channel 0: is dead
debug1: channel 0: garbage collecting
debug1: channel_free: channel 0: client-session, nchannels 1
debug3: channel_free: status: The following connections are open:\015
  #0 client-session (t4 r0 i3/0 o3/0 fd -1/-1)\015

debug3: channel_close_fds: channel 0: r -1 w -1 e 8
debug1: fd 0 clearing O_NONBLOCK
debug2: fd 1 is not O_NONBLOCK
debug1: Transferred: stdin 0, stdout 0, stderr 0 bytes in 0.2 seconds
debug1: Bytes per second: stdin 0.0, stdout 0.0, stderr 0.0
debug1: Exit status 2
Connection closed
$





>Authentication code is common for ssh, scp and sftp too.
>
>Prompt would be
>
>Enter PASSCODE:
>
>if SecurID token is in Next TokenCode or New PIN, follow additional
>prompts.
>
> >
> > Does this support SecurID authentication on scp/sftp as well now? And do 
>you
> > get the PASSCODE prompt?
> >
> > JS.
> >
> > >Hello all,
> > >
> > >I have made SecurID authentication for OpenSSH 3.6.1p2.
> > >
> > >This patch was totaly rewritten, so please test it before use.
> > >
> > >Kbd-int authentication is now integrated into challenge response
> > >auth.
> > >
> > >Privsep is now fully suported.
> > >
> > >
> > >PS: What do you think of selective access to the individual
> > >authentications, similar to AllowGroups/DenyGroups or maybe
> > >AllowUsers/DenyUsers ?
> > >
> > >
> > >Vaclav Tomec
> > >http://sweb.cz/v_t_m/
> > >
> > >______________________________________________________________________
> > >Reklama:
> > >Tolik vìcí a výhod jako od Contactel Bonus Clubu jen tak nezískáte
> > 
> >http://ad2.seznam.cz/redir.cgi?instance=55052%26url=http://club.razdva.cz/
> > >
> > >_______________________________________________
> > >openssh-unix-dev mailing list
> > >openssh-unix-dev at mindrot.org
> > >http://www.mindrot.org/mailman/listinfo/openssh-unix-dev
> >
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