Re: Veritas BackupExec (remote DoS)

[Jonah Kowall <jkowall () PSTEERING COM>]

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