ISC DHCP server 4.2 before 4.2.0-P2, when configured to use failover
partnerships, allows remote attackers to cause a denial of service
(communications-interrupted state and DHCP client service loss) by
connecting to a port that is only intended for a failover peer, as
demonstrated by a Nagios check_tcp process check to TCP port 520.
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[dhcp-users] 20101207 nagios check_tcp kills failover, then dhcp failure.
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