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Re: Veritas BackupExec (remote DoS)
From: Jason Griffiths <buqtraq () WIREDWEBSITES COM>
Date: Tue, 16 Jan 2001 23:22:46 -0800

RE: Veritas BackupExec (remote DoS)Hi,

I can verify that this problem exists also on the Win9x agents, I couldnt figure out why the agents on our network kept 
crashing every sunday, and eventually I figured out that this was about the time that I had weekly portscans scheduled.

I spoke with Veritas tech support - but nothing was ever done about it.

Jason Griffiths

  ----- Original Message ----- 
  From: Jonah Kowall 
  To: BUGTRAQ () SECURITYFOCUS COM 
  Sent: Monday, January 15, 2001 12:57 PM
  Subject: Re: Veritas BackupExec (remote DoS)


  Doesn't the agent only work on backup exec enterprise editions?  That's what I'm using it with.  If you tell them you 
are using the enterprise edition, maybe you can get a different response?  Tell them you are evaluating it if need be.

  I have connected to it, and disconnected, and I didn't see it stop responding.  I have also opened 3 separate 
connections, and found it took all three simultaneously.

  Backup Exec -- Unix Agent, Version 5.01 Revision 5.023 
  Copyright 1999 VERITAS Software Corporation.  All Rights Reserved. 

  This is the version of the Linux agent I am running on redhat 6.2. 



  -----Original Message----- 
  From: oh3mqu+bugtraq () TERAFLOPS COM [mailto:oh3mqu+bugtraq () TERAFLOPS COM] 
  Sent: Monday, January 15, 2001 8:25 AM 
  To: BUGTRAQ () SECURITYFOCUS COM 
  Subject: Veritas BackupExec (remote DoS) 



  Hello, 

  I am using Backup system from Veritas Software (http://www.veritas.com/) 
  and its Linux agent.  That agent is listening TCP-socket (8192 in my 
  system) and if someone makes connection to that socket, but do not send 
  anything to it, the agent hangs forever, even if you close that 
  connection.  For example portscanners make it to hang. 

  I think that the problem is that the software is not using select() 
  function calls before read() calls and it is not using threads either. 

  I reported that to the Veritas and they replied "Unfortunately our Backup 
  Exec Desktop Products do not support backing up Linux machines.  I'm 
  afraid we would be unable to assist you in this instance, however 
  thank you for your interest." 

  -- 
  Ari Saastamoinen 
  oh3mqu+bugtraq () teraflops com 


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