ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled, allows remote attackers to obtain sensitive information from process memory or cause a denial of service (daemon crash) via a packet containing an extension field with an invalid value for the length of its value field.
bugs.ntp.org/show_bug.cgi?id=2671
rhn.redhat.com/errata/RHSA-2015-1459.html
support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne
www.debian.org/security/2015/dsa-3388
www.kb.cert.org/vuls/id/852879
www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
www.securityfocus.com/bid/72583
bugzilla.redhat.com/show_bug.cgi?id=1184573
support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us