X2Go Bug report logs - #1149
ValueError: CTR mode needs counter parameter, not IV

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Message #5 received at submit@bugs.x2go.org (full text, mbox, reply):

From: Markus <markus@eserver.homelinux.org>

To: submit@bugs.x2go.org

Subject: ValueError: CTR mode needs counter parameter, not IV

Date: Fri, 17 Feb 2017 13:38:12 +0100

Package: pyhoca-cli
Version: 0.5.0.4

(sorry for repost, I subscribed now to the mailinglist)

Hi,

pyhoca-cli stopped working for me. I expected it to ask me for password,
but instead it raises an exception.

I don't know what happened, because this worked all the time. And I
think I didn't change anything.

The error message is: "ValueError: CTR mode needs counter parameter, not IV"


Used command:

pyhoca-cli --server xxxxxxx -u xxxxxx -R
xxxx-xx-xxxxxxxxxx_xxxxxxxx-session_xxxx

exact apt versions of my client:
pyhoca-cli 0.5.0.4-0~231~ubuntu16.04.1
python-paramiko 1.16.0-1


pyhoca-cli[16494] NOTICE: preparing requested X2Go session
pyhoca-cli[16494] (PyHocaCLI) NOTICE: preparing requested X2Go session
pyhoca-cli[16494] (x2gosessregistry-pylib) NOTICE: registering X2Go
session Pyhoca-Client_Session...
pyhoca-cli[16494] (x2goclient-pylib) NOTICE: initializing X2Go session...
pyhoca-cli[16494] (x2gocontrolsession-pylib) NOTICE: connecting to
[working]:22
No handlers could be found for logger "paramiko.transport"
Traceback (most recent call last):
  File "/usr/bin/pyhoca-cli", line 422, in <module>
    thisPyHocaCLI.authenticate()
  File "/usr/lib/python2.7/dist-packages/pyhoca/cli/frontend.py", line
455, in authenticate
    self._X2GoClient__connect_session(self.x2go_session_hash,
username=_username, password=self.args.password,
force_password_auth=force_password_auth)
  File "/usr/lib/python2.7/dist-packages/x2go/client.py", line 1367, in
connect_session
    sshproxy_force_password_auth=sshproxy_force_password_auth,
  File "/usr/lib/python2.7/dist-packages/x2go/session.py", line 1322, in
connect
    **_params)
  File
"/usr/lib/python2.7/dist-packages/x2go/backends/control/plain.py", line
1001, in connect
    look_for_keys=look_for_keys)
  File "/usr/lib/python2.7/dist-packages/paramiko/client.py", line 325,
in connect
    t.start_client()
  File "/usr/lib/python2.7/dist-packages/paramiko/transport.py", line
492, in start_client
    raise e
ValueError: CTR mode needs counter parameter, not IV

Message #10 received at 1149@bugs.x2go.org (full text, mbox, reply):

From: Mihai Moldovan <ionic@ionic.de>

To: Markus <markus@eserver.homelinux.org>, 1149@bugs.x2go.org

Subject: Re: [X2Go-Dev] ValueError: CTR mode needs counter parameter, not IV

Date: Mon, 20 Feb 2017 04:07:32 +0100

[Message part 1 (text/plain, inline)]

Control: merge -1 1148

On 17.02.2017 01:38 PM, Markus wrote:
> Package: pyhoca-cli
> Version: 0.5.0.4
> 
> (sorry for repost, I subscribed now to the mailinglist)
> 
> Hi,
> 
> pyhoca-cli stopped working for me. I expected it to ask me for password,
> but instead it raises an exception.
> 
> I don't know what happened, because this worked all the time. And I
> think I didn't change anything.
> 
> The error message is: "ValueError: CTR mode needs counter parameter, not IV"

Probably an incompatibility issue with newer versions of Paramiko. Will have to
look into this.



Mihai

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Message #17 received at 1149@bugs.x2go.org (full text, mbox, reply):

From: Markus <markus@eserver.homelinux.org>

To: 1149@bugs.x2go.org

Subject: Re: [X2Go-Dev] ValueError: CTR mode needs counter parameter, not IV

Date: Tue, 21 Feb 2017 11:30:34 +0100

without changing anything, pyhoca-cli works for me now, but it displays
a warning:

"/usr/lib/python2.7/dist-packages/Crypto/Cipher/blockalgo.py:141:
FutureWarning: CTR mode needs counter parameter, not IV
  self._cipher = factory.new(key, *args, **kwargs)"

When I tried it today, a window poped up asking me for my passphrase
which I need for something else...

And it worked.

But I dont use a keyfile or this passphrase for this x2go related server.

Maybe this information is useful.

But all thinks work for now.


Markus


Am 20.02.2017 um 04:07 schrieb Mihai Moldovan:
> Control: merge -1 1148
> 
> On 17.02.2017 01:38 PM, Markus wrote:
>> Package: pyhoca-cli
>> Version: 0.5.0.4
>>
>> (sorry for repost, I subscribed now to the mailinglist)
>>
>> Hi,
>>
>> pyhoca-cli stopped working for me. I expected it to ask me for password,
>> but instead it raises an exception.
>>
>> I don't know what happened, because this worked all the time. And I
>> think I didn't change anything.
>>
>> The error message is: "ValueError: CTR mode needs counter parameter, not IV"
> 
> Probably an incompatibility issue with newer versions of Paramiko. Will have to
> look into this.
> 
> 
> 
> Mihai
> 

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