after freebsd-update getting undefined symbol "ssh_lowercase"

[Valeri Galtsev]

On Thu, January 15, 2015 11:04 am, Busarow Dan wrote:
> On Jan 15, 2015, at 9:35 AM, Valeri Galtsev <galtsev at kicp.uchicago.edu>
> wrote:
>>
>>
>> On Thu, January 15, 2015 8:54 am, Dan Busarow wrote:
>>> I just ran freebsd-update install on 10 9.3-RLEASE systems.
>>>
>>> All but one work fine.  That one is giving me the error
>>>
>>> /usr/bin/slogin: Undefined symbol "ssh_lowercase"
>>>
>>> when trying to ssh out
>>>
>>> Trying to connect to this machine using ssh give the error
>>>
>>> ssh_exchange_identification: Connection closed by remote host
>>>
>>> Any ideas???
>>>
>>
>> posting here what you get doing
>>
>> ssh -vvv username at host.in.question
>>
>> may help.
>>
>> Valeri
>
> Hi Valeri,
>
> Here you go.
>
> OpenSSH_6.6.1, OpenSSL 0.9.8za-freebsd 5 Jun 2014
> debug1: Reading configuration data /etc/ssh/ssh_config
> debug2: ssh_connect: needpriv 0
> debug1: Connecting to doheny.buildingonline.net [2607:fc50:1001:8f00::10]
> port 22.
> debug1: Connection established.
> debug3: Incorrect RSA1 identifier
> debug3: Could not load "/home/dan/.ssh/id_rsa" as a RSA1 public key
> debug1: identity file /home/dan/.ssh/id_rsa type 1
> debug1: identity file /home/dan/.ssh/id_rsa-cert type -1
> debug1: identity file /home/dan/.ssh/id_dsa type -1
> debug1: identity file /home/dan/.ssh/id_dsa-cert type -1
> debug1: identity file /home/dan/.ssh/id_ecdsa type -1
> debug1: identity file /home/dan/.ssh/id_ecdsa-cert type -1
> debug1: identity file /home/dan/.ssh/id_ed25519 type -1
> debug1: identity file /home/dan/.ssh/id_ed25519-cert type -1
> debug1: Enabling compatibility mode for protocol 2.0
> debug1: Local version string SSH-2.0-OpenSSH_6.6.1_hpn13v11
> FreeBSD-20140420
> ssh_exchange_identification: Connection closed by remote host
>
>
> Note the message is the same when using IPv4, just the IP address changes.
>
>
> On the host in question, ssh -vvv another.host gives
>
> OpenSSH_6.6.1, OpenSSL 0.9.8za-freebsd 5 Jun 2014
> debug 1: Reading configuration data /etc/ssh/ssh_config
> /usr/bin/ssh: Undefined symbol "ssh_lowercase"
>

My wild guess would be that one of the libraries is ether corrupt on
upgraded machine, or does not match what ssh (and sshd) were compiled
against. A quick look on my machine:

root at point:/usr # which ssh
/usr/bin/ssh
root at point:/usr # grep ssh_lowercase /usr/bin/ssh
Binary file /usr/bin/ssh matches
root at point:/usr # ldd /usr/bin/ssh
/usr/bin/ssh:
	libssh.so.5 => /usr/lib/private/libssh.so.5 (0x800847000)
	libutil.so.9 => /lib/libutil.so.9 (0x800ad4000)
	libldns.so.5 => /usr/lib/private/libldns.so.5 (0x800ce6000)
	libgssapi.so.10 => /usr/lib/libgssapi.so.10 (0x800f42000)
	libcrypt.so.5 => /lib/libcrypt.so.5 (0x80114b000)
	libcrypto.so.7 => /lib/libcrypto.so.7 (0x80136b000)
	libz.so.6 => /lib/libz.so.6 (0x80175e000)
	libc.so.7 => /lib/libc.so.7 (0x801974000)
	libkrb5.so.11 => /usr/lib/libkrb5.so.11 (0x801d1d000)
	libhx509.so.11 => /usr/lib/libhx509.so.11 (0x801f95000)
	libasn1.so.11 => /usr/lib/libasn1.so.11 (0x8021df000)
	libcom_err.so.5 => /usr/lib/libcom_err.so.5 (0x80247c000)
	libmd.so.6 => /lib/libmd.so.6 (0x80267e000)
	libroken.so.11 => /usr/lib/libroken.so.11 (0x80288e000)
	libwind.so.11 => /usr/lib/libwind.so.11 (0x802aa0000)
	libheimbase.so.11 => /usr/lib/libheimbase.so.11 (0x802cc8000)
	libheimipcc.so.11 => /usr/lib/private/libheimipcc.so.11 (0x802ecc000)
	libthr.so.3 => /lib/libthr.so.3 (0x8030ce000)

root at point:/usr # grep ssh_lowercase /usr/lib/private/libssh.so.5
Binary file /usr/lib/private/libssh.so.5 matches

...you can check all other libraries ssh linked against for the same
string. These (/usr/lib/private/libssh.so.5 and others that contain that
string) are the ones I would reinstall (together with ssh and sshd).

Hopefully someone can pinpoint it. I just described how I would proceed...

Good luck.

Valeri

++++++++++++++++++++++++++++++++++++++++
Valeri Galtsev
Sr System Administrator
Department of Astronomy and Astrophysics
Kavli Institute for Cosmological Physics
University of Chicago
Phone: 773-702-4247
++++++++++++++++++++++++++++++++++++++++