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#1 2021-10-19 11:39:47

quellen
Member
From: Italy
Registered: 2014-05-24
Posts: 274

[SOLVED] Very Secure FTP Daemon: Error 500 OOPS: priv_sock_get_cmd

hello,
i'm tryng to configure vsftpd following the wiki but when i try to connect and type "ls" it says error.

lftp pippo@192.168.0.33:~> ls                     
ls: Fatal error: 500 OOPS: priv_sock_get_cmd
$ cat /etc/hosts.allow
# Allow all connections
vsftpd: ALL
# IP address range
vsftpd: 10.0.0.0/255.255.255.0
$ cat /etc/vsftpd.conf 

# Example config file /etc/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
#local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
#anon_upload_enable=YES
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
#anon_mkdir_write_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
dirmessage_enable=YES
#
# Activate logging of uploads/downloads.
xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=YES
#chown_username=whoever
#
# You may override where the log file goes if you like. The default is shown
# below.
#xferlog_file=/var/log/vsftpd.log
#
# If you want, you can have your log file in standard ftpd xferlog format.
# Note that the default log file location is /var/log/xferlog in this case.
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=ftpsecure
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
#async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
ascii_upload_enable=YES
ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd.banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
# (Warning! chroot'ing can be very dangerous. If using chroot, make sure that
# the user does not have write access to the top level directory within the
# chroot)
user_sub_token=$USER
chroot_local_user=YES
chroot_list_enable=YES
# (default follows)
chroot_list_file=/etc/vsftpd.chroot_list
local_root=/home/$USER/Public_html
allow_writeable_chroot=YES
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
ls_recurse_enable=YES
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
listen=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd with two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES

# Set own PAM service name to detect authentication settings specified
# for vsftpd by the system package.
pam_service_name=vsftpd
     
$ cat /etc/vsftpd.chroot_list 
pippo
$ sudo systemctl status vsftpd.service
● vsftpd.service - vsftpd daemon
     Loaded: loaded (]8;;file://linux/usr/lib/systemd/system/vsftpd.service/usr/lib/systemd/system/vsftpd.service]8;;; disabled; vendor p>
     Active: active (running) since Tue 2021-10-19 13:28:00 CEST; 7min ago
   Main PID: 2851 (vsftpd)
      Tasks: 1 (limit: 4332)
     Memory: 500.0K
        CPU: 119ms
     CGroup: /system.slice/vsftpd.service
             └─2851 /usr/bin/vsftpd

Last edited by quellen (2021-10-19 11:54:20)


sorry for my bad english

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#2 2021-10-19 11:53:07

quellen
Member
From: Italy
Registered: 2014-05-24
Posts: 274

Re: [SOLVED] Very Secure FTP Daemon: Error 500 OOPS: priv_sock_get_cmd

i SOLVED adding

seccomp_sandbox=NO

to /etc/vsftpd.conf


sorry for my bad english

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