Linux解决CVE-2011-0762漏洞vsftpd升级步骤
Linux解决CVE-2011-0762漏洞vsftpd升级步骤
操作系统版本：RHEL 6.8 64位
vsftpd 升级到3.0.3
关闭服务
service vsftpd stop
service iptables stop
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config;
检查旧版vsftpd 版本
vsftpd -v
卸载旧版vsftpd
yum remove -y vsftpd
#lixinfu add 可否换成rpm -e --nodeps vsftpd，有待确认。
安装依赖包:
yum install -y libcap libcap-devel tcp_wrappers tcp_wrappers-devel
编译安装源码包
tar -xzvf vsftpd-3.0.3.tar.gz
cd vsftpd-3.0.3
修改显示
sed -i 's/UTF8 ON/DISABLE UTF8 ON/g' opts.c
编译安装
make &;&; make install
mkdir /etc/vsftpd/
cp vsftpd.conf /etc/vsftpd/ #配置文件
cp RedHat/vsftpd.pam /etc/pam.d/vsftpd #PAM认证文件
sed -i 's/lib///lib64///g' /etc/pam.d/vsftpd
如果不成功，手动修改/etc/pam.d/vsftpd中的lib为lib64
启动并查看vsftpd
/usr/local/sbin/vsftpd &
netstat -tunlp | grep 21
/usr/local/sbin/vsftpd -v
cp /usr/local/sbin/vsftpd /usr/sbin/vsftpd
制作启动脚本
vim /etc/xinetd.d/vsftpd
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#!/bin/bash
#
### BEGIN INIT INFO
# Provides: vsftpd
# Required-Start: $local_fs $network $named $remote_fs $syslog
# Required-Stop: $local_fs $network $named $remote_fs $syslog
# Short-Description: Very Secure Ftp Daemon
# Description: vsftpd is a Very Secure FTP daemon. It was written completely from
# scratch
### END INIT INFO
# vsftpd This shell script takes care of starting and stopping
# standalone vsftpd.
#
# chkconfig: - 60 50
# description: Vsftpd is a ftp daemon, which is the program /
# that answers incoming ftp service requests.
# processname: vsftpd
# config: /etc/vsftpd/vsftpd.conf
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
RETVAL=0
prog="vsftpd"
start() {
# Start daemons.
if [ -d /etc ] ; then
for i in `ls /etc/vsftpd/vsftpd.conf`; do
site=`basename $i .conf`
echo -n $"Starting $prog for $site: "
/usr/local/sbin/vsftpd $i &
RETVAL=$?
[ $RETVAL -eq 0 ] && {
touch /var/lock/subsys/$prog
success $"$prog $site"
}
echo
done
else
RETVAL=1
fi
return $RETVAL
}
stop() {
# Stop daemons.
echo -n $"Shutting down $prog: "
killproc $prog
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
return $RETVAL
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload)
stop
start
RETVAL=$?
;;
condrestart)
if [ -f /var/lock/subsys/$prog ]; then
stop
start
RETVAL=$?
fi
;;
status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $0 {start|stop|restart|condrestart|status}"
exit 1
esac
exit $RETVAL
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
授权755
chmod 755 /etc/init.d/vsftpd
chkconfig vsftpd on
echo tjpaea >> /etc/vsftpd/chroot_list
修改配置文件
vim /etc/vsftpd/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=YES
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)
#chroot_local_user=YES
#chroot_list_enable=YES
local_root=/home/tjpaea/upload
chroot_local_user=YES
chroot_list_enable=NO
# (default follows)
chroot_list_file=/etc/vsftpd/chroot_list
#
# 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
pam_service_name=vsftpd
#userlist_enable=YES
userlist_enable=NO
allow_writeable_chroot=YES
验证
service vsftpd restart
vsftpd -v
操作系统版本：RHEL 6.8 64位
vsftpd 升级到3.0.3
关闭服务
service vsftpd stop
service iptables stop
sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config;
检查旧版vsftpd 版本
vsftpd -v
卸载旧版vsftpd
yum remove -y vsftpd
#lixinfu add 可否换成rpm -e --nodeps vsftpd，有待确认。
安装依赖包:
yum install -y libcap libcap-devel tcp_wrappers tcp_wrappers-devel
编译安装源码包
tar -xzvf vsftpd-3.0.3.tar.gz
cd vsftpd-3.0.3
修改显示
sed -i 's/UTF8 ON/DISABLE UTF8 ON/g' opts.c
编译安装
make &;&; make install
mkdir /etc/vsftpd/
cp vsftpd.conf /etc/vsftpd/ #配置文件
cp RedHat/vsftpd.pam /etc/pam.d/vsftpd #PAM认证文件
sed -i 's/lib///lib64///g' /etc/pam.d/vsftpd
如果不成功，手动修改/etc/pam.d/vsftpd中的lib为lib64
启动并查看vsftpd
/usr/local/sbin/vsftpd &
netstat -tunlp | grep 21
/usr/local/sbin/vsftpd -v
cp /usr/local/sbin/vsftpd /usr/sbin/vsftpd
制作启动脚本
vim /etc/xinetd.d/vsftpd
disable = yes
重启xinetd服务
service xinetd restart
vim /etc/init.d/vsftpd++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
#!/bin/bash
#
### BEGIN INIT INFO
# Provides: vsftpd
# Required-Start: $local_fs $network $named $remote_fs $syslog
# Required-Stop: $local_fs $network $named $remote_fs $syslog
# Short-Description: Very Secure Ftp Daemon
# Description: vsftpd is a Very Secure FTP daemon. It was written completely from
# scratch
### END INIT INFO
# vsftpd This shell script takes care of starting and stopping
# standalone vsftpd.
#
# chkconfig: - 60 50
# description: Vsftpd is a ftp daemon, which is the program /
# that answers incoming ftp service requests.
# processname: vsftpd
# config: /etc/vsftpd/vsftpd.conf
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
. /etc/sysconfig/network
RETVAL=0
prog="vsftpd"
start() {
# Start daemons.
if [ -d /etc ] ; then
for i in `ls /etc/vsftpd/vsftpd.conf`; do
site=`basename $i .conf`
echo -n $"Starting $prog for $site: "
/usr/local/sbin/vsftpd $i &
RETVAL=$?
[ $RETVAL -eq 0 ] && {
touch /var/lock/subsys/$prog
success $"$prog $site"
}
echo
done
else
RETVAL=1
fi
return $RETVAL
}
stop() {
# Stop daemons.
echo -n $"Shutting down $prog: "
killproc $prog
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$prog
return $RETVAL
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
restart|reload)
stop
start
RETVAL=$?
;;
condrestart)
if [ -f /var/lock/subsys/$prog ]; then
stop
start
RETVAL=$?
fi
;;
status)
status $prog
RETVAL=$?
;;
*)
echo $"Usage: $0 {start|stop|restart|condrestart|status}"
exit 1
esac
exit $RETVAL
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
授权755
chmod 755 /etc/init.d/vsftpd
chkconfig vsftpd on
echo tjpaea >> /etc/vsftpd/chroot_list
修改配置文件
vim /etc/vsftpd/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=YES
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)
#chroot_local_user=YES
#chroot_list_enable=YES
local_root=/home/tjpaea/upload
chroot_local_user=YES
chroot_list_enable=NO
# (default follows)
chroot_list_file=/etc/vsftpd/chroot_list
#
# 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
pam_service_name=vsftpd
#userlist_enable=YES
userlist_enable=NO
allow_writeable_chroot=YES
验证
service vsftpd restart
vsftpd -v