Bug 2886

Summary:	ssh-copy-id appears to hang indefinitely when ssh multiplexing is enabled
Product:	Portable OpenSSH	Reporter:	Ahmet Mercan <ahmet.mercan>
Component:	ssh-copy-id	Assignee:	Assigned to nobody <unassigned-bugs>
Status:	CLOSED DUPLICATE
Severity:	normal	CC:	phil
Priority:	P5
Version:	6.6p1
Hardware:	amd64
OS:	Linux

Description Ahmet Mercan 2018-07-24 19:28:15 AEST

After a recent successfull login to an openssh-server, if you use ssh-copy-id command with multiplexing enabled ssh client, it hangs indefinitely, and Ctrl-C can't terminate the command.

Ssh client's .ssh/config file is set as:

Host *
ControlMaster auto
ControlPath ~/.ssh/sockets/%r@%h-%p
ControlPersist 30


Furthermore, if you try to login same server within the above timeout duration, you can successfully login without password. But weirdly, no authorized_keys file is created on the remote server.

Our ssh client is openssh-clients-6.6.1p1-25.el7_2.x86_64 on Centos 7.2.

Ssh servers which we successfully login to without passwords are openssh-server-7.4p1-11.el7.x86_64 (Centos 7.4), openssh-server-7.4p1-16.el7.x86_64 (Centos 7.5), openssh-server-5.3p1-123.el6_9.x86_64 (Centos 6.10). Ssh-servers are at default settings set by distribution installers.

Comment 1 Philip Hands 2020-09-17 06:41:47 AEST

Sorry about not replying to this earlier.

This seems to be a duplicate of bug #2488 (fixed)
Assuming that's the case, I'll close this bug now, but please feel free to reopen it, or submit a new one if it turns out that it was not fixed by that change.

Cheers, Phil.

*** This bug has been marked as a duplicate of bug 2488 ***

Comment 2 Damien Miller 2021-03-04 09:52:19 AEDT

close bugs that were resolved in OpenSSH 8.5 release cycle