[imp] Possible bug, or DOS?

[Robert Marchand]

Hi,

         this is a followup on the problem reported by me and Matt 
Goebel.  I had one of
those incidents this morning.  When I was alerted I tried to kill the httpd 
server that was
responding to it.  This didn't do anything.  It just began again with 
another httpd process.
Restarting the Apache server (both gracefully and hard) didn't change anything.

I finally manage to stop it with a redirect directive in the Apache 
configuration:

redirect permanent /horde/imp/view.php3/login.php3 http://<serveur 
name>/login.php3

It seems to have no side effects.

I don't know what is causing the problem.  I think it has something to do 
with someone
opening an attachment in a new window and then logging out from the main 
window without closing the attachment.  It's just a guess!

This has been occuring in 2.2.6, 2.2.7.  It may have occured in earlier 
versions too.  One
thing that might be related is that our Apache root directory is set to 
/horde/imp.

Hope that can help others.

Thanks.
At 09:43 01-11-01 -0500, Matt Goebel wrote:

>>Hello,
>>
>>   We are running IMP 2.2.6 and it has been running great for a couple of
>>months now.  But in the last week twice I've noticed an odd problem.
>>The server IMP is running on will slow way down, and I'll find
>>a huge number of entries like this in our apache access log file :
>>
>>x.x.x.x - - [31/Oct/2001:16:59:46 -0500] "GET 
>>/horde/imp/view.php3/login.php3?reason=logout HTTP/1.1" 302 5
>>
>>   All from the same address, with about 10 such entries a second.  I
>>end up having to deny access to the IP to get the server running
>>reasonably again.  Any ideas if this is some odd behavior from IMP, a
>>broken browser, or just one of our users being annoying?
>>
>>Many Thanks,
>>Matt Goebel
>>
>>--
>>Matthew Goebel : goebel@emunix.emich.edu : Unix Jockey @ EMU : Hail Eris
>>Neo-Student, Net Lurker, Donut consumer, and procrastinating Furry Fan.
>>  "Always with the negative waves, Moriarty" - Oddball
>>  "Comfort the troubled, and trouble the comfortable." - Dietrich=
 Bonhoeffer
>>
>>--
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-------
Robert Marchand                 tél: 343-6111 poste 5210
DGTIC-SIT                       e-mail: robert.marchand@umontreal.ca
Université de Montréal          Montréal, Canada