[ale] Is there a limit on password length or characters for OUTBOUND sftp when receding a "password" prompt?

[Lightner, Jeffrey]

I wouldn't think pam on the local host would be involved since we're doing the login on the remote host.    

The remote host doesn't seem to be where the limitation is as I can login there from a local RHEL7 - just not from local RHEL6 or RHEL5 which is why I'm thinking it is a limitation built into the local sftp command on RHEL6/RHEL5 but not RHEL7.


-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Raj Wurttemberg
Sent: Thursday, April 20, 2017 7:07 PM
To: 'Atlanta Linux Enthusiasts'
Subject: Re: [ale] Is there a limit on password length or characters for OUTBOUND sftp when receding a "password" prompt?

Hey Jeff,

Silly thought...  Could there be a max password length set in PAM or login.defs?  Or maybe 'pam_cracklib.so' can't handle more than 32 characters?

/Raj

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Lightner, Jeffrey
Sent: Thursday, April 20, 2017 5:45 PM
To: Atlanta Linux Enthusiasts <ale at ale.org>
Subject: Re: [ale] Is there a limit on password length or characters for OUTBOUND sftp when receding a "password" prompt?

Tried on what?

As noted the password actually works on the remote system if I do sftp from
a RHEL7 server to the remote.    So whatever they're running on the remote
has no problem with a password that long.  That suggests to me the issue is that something in the local sftp command on RHEL6 is not sending the
password properly.   I suspect it is due to length i.e. sftp command doesn't
allow for the 30+ character because it only expects to send something less (e.g. the 15/16 characters tantalizing mentioned in the Cisco bug) or it
doesn't like the "-" that appears 4 times in the password.   

NB:  The remote is NOT Cisco - I only mention Cisco because it was the only thing I saw that suggested a length limit in all my web searches.

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of Leam Hall
Sent: Thursday, April 20, 2017 5:26 PM
To: Atlanta Linux Enthusiasts
Subject: Re: [ale] Is there a limit on password length or characters for OUTBOUND sftp when receding a "password" prompt?

On 04/20/17 16:03, Lightner, Jeffrey wrote:
 > Yes.   As noted I have the issue either typing the password or
 > doing cut and paste.

Hmm...sorry. I missed that.

Well, I just tried a 32 character alphanumeric password for both ssh, sftp, and su. All failed. So it looks like password is the issue, not ssh.



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