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Test ID:10198
Category:Useless services
Title:Quote of the day
Summary:Checks for the presence of qotd
Description:
Synopsis :

The quote service (qotd) is running on this host.

Description :

A server listens for TCP connections on TCP port 17. Once a connection
is established a short message is sent out the connection (and any
data received is thrown away). The service closes the connection
after sending the quote.

Another quote of the day service is defined as a datagram based
application on UDP. A server listens for UDP datagrams on UDP port 17.
When a datagram is received, an answering datagram is sent containing
a quote (the data in the received datagram is ignored).


An easy attack is 'pingpong' which IP spoofs a packet between two machines
running qotd. This will cause them to spew characters at each other,
slowing the machines down and saturating the network.

Solution :

- Under Unix systems, comment out the 'qotd' line in /etc/inetd.conf
and restart the inetd process

- Under Windows systems, set the following registry keys to 0 :
HKLM\System\CurrentControlSet\Services\SimpTCP\Parameters\EnableTcpQotd
HKLM\System\CurrentControlSet\Services\SimpTCP\Parameters\EnableUdpQotd

Then launch cmd.exe and type :

net stop simptcp
net start simptcp

To restart the service.
Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-1999-0103
Cert/CC Advisory: CA-96.01.UDP_service_denial
XForce ISS Database: echo
XForce ISS Database: chargen
XForce ISS Database: chargen-patch
CopyrightThis script is Copyright (C) 1999 Mathieu Perrin

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