Full Disclosure mailing list archives
Re: Outlook 2003 listening on udp/3088
From: insecure <insecure () ameritech net>
Date: Mon, 17 May 2004 15:38:54 -0500
Ondrej Krajicek wrote:
Hello, I've just noticed (no, not by using tools which ship with Windows XP[1], thank you Bill), that Outlook 2003 binds to UDP port 3088 on all interfaces and listens. Quick Googling for it found no useful explanation. Does anyone know what is this good for? Another open port on my (and thousands of others) Windows box really does not help anything, at least when it comes to security. Anyway, I am using desktop firewall for access control, but knowing what this is and how can it be disabled ;-) will make my sleep a bit better. Regards, Ondra PS: [1] ...netstat wouldn't do, it does not display pid (or something). +>>>-----------------------------------------------------------------+ |Ondrej Krajicek (-KO| |Institute of Computer Science, Masaryk University Brno, CR | |http://isildur.ics.muni.cz/~ondra krajicek () ics muni cz| +--------------------------------------------------------------------+
This is probably the new mail notification service used by Exchange. See http://support.microsoft.com/default.aspx?scid=kb;EN-US;264035"New mail notification messages are sent by means of UDP packets from the server to the client. The ports used for this notification are set by the client when the client logs on to the information store. As part of the log on process to the information store, the client tells the server the IP address and port where it expects to receive new mail notification messages. This will be a UDP port in the 1024-65535 range."
Here are instructions for how to turn it off for LookOut 2002. http://support.microsoft.com/default.aspx?scid=kb;EN-US;305572 2003 is probably similar.Even if there was some vulnerability that could be exploited through this service, it would be hard to do, as the port number is not predictable.
jerry _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- Outlook 2003 listening on udp/3088 Ondrej Krajicek (May 17)
- Re: Outlook 2003 listening on udp/3088 insecure (May 17)
- Re: Outlook 2003 listening on udp/3088 Richard Maudsley (May 17)
- Re: Outlook 2003 listening on udp/3088 ageddyn (May 18)
- Re: Outlook 2003 listening on udp/3088 Ondrej Krajicek (May 18)
- Re: Outlook 2003 listening on udp/3088 Richard Maudsley (May 17)
- <Possible follow-ups>
- Re: Outlook 2003 listening on udp/3088 Oliver Raymond (May 17)
- Re: Outlook 2003 listening on udp/3088 insecure (May 17)