Bug 1531

Summary:

sftp disconnect when talking to ws_ftp server 6.1.1

Product:

Portable OpenSSH

Reporter:

Jeff White <jwhite>

Component:

sftp

Assignee:

Assigned to nobody <unassigned-bugs>

Status:

CLOSED FIXED

Severity:

normal

CC:

djm, dtucker

Priority:

Version:

5.1p1

Hardware:

SPARC

OS:

Solaris

Bug Depends on:

Bug Blocks:

1481

Attachments:

Description	Flags
Requested debug file	none
Only send no-more-sessions and eow extension messages to OpenSSH servers.	none

Description Jeff White 2008-10-16 08:59:29 AEDT

Am receiving a disconnect message from sftp when conversing with ws_ftp server 6.1.1. Have downloaded and installed "newest" openssh5.1p1. No success.

Tried with OpenSSH 5.0p1 and sftp does not receive disconnect message when connecting to ws_ftp 6.1.1 server. Also, used version of OpenSSH that comes with Solaris 10 install and succeeded in connecting to ws_ftp 6.1.1 server.

Have I run into a bug? Any comments or suggestions are welcome. Thank you.

Comment 1 Darren Tucker 2008-10-16 12:33:08 AEDT

Could you please attach the debug output from the client (ie "sftp -vvv yourserver").  (Please use "Add an atachment" rather than pasting into the comment field.)

Comment 2 Jeff White 2008-10-17 00:26:52 AEDT

Created attachment 1575 [details]
Requested debug file

Thanks for your time looking at this. Have a good day.

Comment 3 Darren Tucker 2008-10-17 11:00:22 AEDT

Created attachment 1576 [details]
Only send no-more-sessions and eow extension messages to OpenSSH servers.

OK, that looks like it's choking on the no-more-sessions message.

If that's the case it means that the server is buggy (the spec says it's supposed to messages it doesn't understand with a failure message).

There has been code added to OpenBSD's OpenSSH which works around this, but the code has not yet been synced to the Portable development version.

This change is in the attached patch, please apply it to a clean openssh-5.1p1 tree and see if it resolves your problem.

Comment 4 Jeff White 2008-10-18 03:42:02 AEDT

The patches you sent me work when added to my openssh 5.1p1 tree. Thank you so much. I have no problem connecting to ws_ftp server 6.1.1 now. It appears that ssh connects as required as well. Again, thanks.

Comment 5 Damien Miller 2008-12-08 09:55:51 AEDT

Patch has been synced to portable and will be in openssh-5.2. Thanks.

Comment 6 Damien Miller 2009-02-23 13:36:32 AEDT

Close bugs fixed/reviewed for openssh-5.2 release