Re: (fwd) Re: [Exim] Exim DoS - Delaying system performance …

Top Page
Delete this message
Reply to this message
Author: Philip Hazel
Date:  
To: Steven Clarke
CC: exim-users
Subject: Re: (fwd) Re: [Exim] Exim DoS - Delaying system performance / system crash.
On Wed, 5 Jan 2000, Steven Clarke wrote:

> I think that you are misreading the code.


Almost certainly! I just glanced at it, and in any case, my brain hasn't
yet recovered from the flu I had over the holiday. :-(

> It seems to be connecting to the
> mail server, starting a SMTP session and then sending a 1Mb header line.
> This doesn't seem to cause a DoS to Exim 3.12 so it looks like the changes
> between 3.10 and 3.11 to improve memory allocation for headers worked.


Oh, right. Yes, those changes were specifically aimed at fixing this
problem. Good. I like it when I can say "already fixed" :-)


-- 
Philip Hazel            University of Cambridge Computing Service,
ph10@???      Cambridge, England. Phone: +44 1223 334714.