#448 - x2goclient won't connect with ssh agent (Q: Who was so afraid of the NSA that he disabled agent communication in x2go?)

X2Go Bug report logs - #448
x2goclient won't connect with ssh agent (Q: Who was so afraid of the NSA that he disabled agent communication in x2go?)

Reported by: Stefan Baur <newsgroups.mail2@stefanbaur.de>

Date: Thu, 6 Mar 2014 17:55:02 UTC

Severity: normal

Tags: pending

Found in version 4.0.2.0

Fixed in version 4.0.2.0

Done: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

Bug is archived. No further changes may be made.

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Subject: Bug#448: x2goclient won't connect with ssh agent (Q: Who was so afraid of the NSA that he disabled agent communication in x2go?)
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Date: Thu, 06 Mar 2014 18:45:21 +0100
From: Stefan Baur <newsgroups.mail2@stefanbaur.de>
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Package: x2goclient Version: 4.0.2.0 (I'm filing this against 4.0.2.0 b/c it's still present there. If bugs should be filed against the version they initially appeared in, please let me know) not affected: 4.0.0.3 with PulseAudio 0.9.6 not affected: 4.0.1.2 with PulseAudio 0.9.6 possibly affected (untested) 4.0.1.3 with PulseAudio 0.9.6 affected: 4.0.1.3+build2 with PulseAudio 0.9.6 affected: 4.0.2.0 Preface: The followin issue has been observed on Windows; whoever takes care of this should also check if the same issue occurs on Linux and Mac when using the ssh agents shipped with these operating systems. Situation: 4.0.1.2 with PulseAudio 0.9.6 and older clients allowed the use of an external SSH agent that loads and memorizes SSH private keys (so you don't have to re-enter your private key's passphrase whenever you try to connect). In my case, this SSH agent was "Pageant" from the PuTTY package. With 4.0.1.3+build2/PA0.9.6, using the same (registry-stored) settings as before, x2goclient.exe pops up a dialog box asking me for my private key's password. Which it does over and over again, without ever connecting. To me, it looks like it's asking for the password for a non-existant private key, the key with the file name "", thus it always fails. Assumption: Someone tried to add/fix code regarding ssh public key authentication (maybe something to do with bug #322?), took care of whatever issue there was with private key file handling by x2goclient itself, but overlooked the possibility that an external ssh agent might be involved. Net Result: SSH public key login using an SSH agent is effectively broken in 4.0.1.3+build2 (and possibly 4.0.1.3), up to 4.0.2.0-2014-03-06 (nightly build), and probably still broken in the current source. Sounds like a case for one of our two Mikes ... -Stefan

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X2Go Bug report logs - #448 x2goclient won't connect with ssh agent (Q: Who was so afraid of the NSA that he disabled agent communication in x2go?)

X2Go Bug report logs - #448
x2goclient won't connect with ssh agent (Q: Who was so afraid of the NSA that he disabled agent communication in x2go?)