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Re: ntpd segfaults accessing IPv6 hosts
From: mayer () gis net
Date: Mon, 01 Nov 2004 10:30:26 -0500

----- Original Message Follows -----
Hi full-disclosure!

ntpd 1:4.2.0a-11 (as in debian testing/sarge and unstable/sid) 
segfaults when accessing ntp servers on IPv6 hosts. I don't know 
whether this bug is exploitable. But such a server on 
pool.ntp.org might DoS many servers.

There are no IPv6 addresses in pool.ntp.org so there is no risk here.
(dig AAAA pool.ntp.org)


There is a fixed version available.


The latest ntp-dev tarball should have the fixes. Currently the
number of ntp servers with IPv6 AAAA records is very low.

For more details see http://bugzilla.ntp.org/show_bug.cgi?id=353

Bernhard


Danny 
NTP Development

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