Bug#926719: same problem here with filezilla but not with sftp command line

Wed Apr 10 09:16:18 BST 2019

hi,

  we got the same issue here, fillezilla worked yesterday and cannot connect since the upgrade:

2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): Config for 
Serveur FTP :
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SFTPEngine
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SFTPLog
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): AllowOverwrite
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): 
RequireValidShell
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SFTPHostKey
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SFTPHostKey
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): 
SFTPAuthorizedUserKeys
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SFTPCompression
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): MaxLoginAttempts
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): DefaultRoot
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): Umask
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): DirUmask
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): DefaultRoot
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): WrapEngine
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): WrapServiceName
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): WrapTables
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): WrapUserTables
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): WrapUserTables
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): DefaultRoot
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): AuthPAM
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ROOT PRIVS 
at auth.c:419
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): opening 
TransferLog '/var/log/xferlog'
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): setting 
group IDs: 4733, 0, 4734
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): RELINQUISH 
PRIVS at auth.c:458
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): USER PRIVS 
47000 at auth.c:159
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): retrieved 
UID 47000 for user 'admin'
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): RELINQUISH 
PRIVS at auth.c:164
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): Preparing to 
chroot to directory '/usr/local/.admin/home/admin'
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ROOT PRIVS 
at auth.c:1472
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): RELINQUISH 
PRIVS at auth.c:1475
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): Environment 
successfully chroot()ed
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ROOT PRIVS 
at auth.c:490
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SETUP PRIVS 
at auth.c:491
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ROOT PRIVS 
at auth.c:502
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): REVOKE PRIVS 
at auth.c:503
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): changed 
directory to '/'
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): in 
dir_check_full(): path = '/', fullpath = '/usr/local/.admin/home/admin/'.
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): in 
dir_check_full(): setting umask to 0027 (was 0022)
2019-04-10 10:02:59,870 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): USER admin: 
Login successful
2019-04-10 10:02:59,871 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ProFTPD 
terminating (signal 11)
2019-04-10 10:02:59,871 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): ProFTPD 
terminating (signal 11)
2019-04-10 10:02:59,871 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): 
mod_sftp/0.9.9: scrubbing 2 passphrases from memory
2019-04-10 10:02:59,871 xxxxxxxx.xxxxxxxxx.com proftpd[23496] 0.0.0.0 (211.ip-51-68-231.eu[51.68.231.211]): SSH2 session 
closed.

ssh session is openned but closed asap by the server. Reported by several people here, using filezilla. It was working 
yesterday fine.

However the sftp command line works: sftp -vv -P 2221 ...

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
debug1: Authentication succeeded (keyboard-interactive).
Authenticated to xxxxxxxxxxxxxxx ([xx.xx.164.232]:2221).
debug2: fd 5 setting O_NONBLOCK
debug1: channel 0: new [client-session]
debug2: channel 0: send open
debug1: Entering interactive session.
debug1: pledge: network
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 3 setting TCP_NODELAY
debug2: client_session2_setup: id 0
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug1: Sending env LC_NUMERIC = C
debug2: channel 0: request env confirm 0
debug1: Sending subsystem: sftp
debug2: channel 0: request subsystem confirm 1
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 4294967295 rmax 32768
debug2: channel_input_status_confirm: type 99 id 0
debug2: subsystem request accepted on channel 0
debug2: Remote version: 3
debug2: Unrecognised server extension "versions"
debug2: Server supports extension "fsync at openssh.com" revision 1
debug2: Server supports extension "posix-rename at openssh.com" revision 1
debug2: Server supports extension "statvfs at openssh.com" revision 2
debug2: Server supports extension "fstatvfs at openssh.com" revision 2
Connected to xxxxxxxxxxxxx.
sftp> ls
Maildir                 RPM-GPG-KEY-virtualmin  RPM-GPG-KEY-webmin
sftp>

best regards,
Ghislain.