[5346] in bugtraq
Re: TCPwrappers race condition
daemon@ATHENA.MIT.EDU (Wietse Venema)
Sat Oct 4 13:47:47 1997
Date: Fri, 3 Oct 1997 19:24:36 -0400
Reply-To: Wietse Venema <wietse@WZV.WIN.TUE.NL>
From: Wietse Venema <wietse@WZV.WIN.TUE.NL>
To: BUGTRAQ@NETSPACE.ORG
In-Reply-To: <Pine.SCO.3.96.971003215903.1573A-100000@jwt> from "John W.
Temples" at "Oct 3, 97 11:06:50 pm"
Wietse Venema:
> Although the time window can be made *smaller* by using results
> from accept() instead of getpeername(), the time window can be
> eliminated only by changing the kernel so that it does not destroy
> the protocol control block when the connection is reset by the
> peer.
John W. Temples:
> If accept() does return without an error, why would you not have
> the address? Thus where is the time window?
The time window is with the other returns from accept(). Ignoring
error returns from accept() does not solve the problem.
Wietse
