Gentoo Linux Security Advisory 201001-1 - A Denial of Service condition in ntpd can cause excessive CPU or bandwidth consumption. Robin Park and Dmitri Vinokurov discovered that ntp_request.c in ntpd does not handle MODE_PRIVATE packets correctly, causing a continuous exchange of MODE_PRIVATE error responses between two NTP daemons or causing high CPU load on a single host. Versions less than 4.2.4_p7-r1 are affected.
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