Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an ntpq query and sending a response with a crafted array.
https://www.synology.com/support/security/Synology_SA_18_13
https://www.oracle.com//security-alerts/cpujul2021.html
https://usn.ubuntu.com/3707-2/
https://usn.ubuntu.com/3707-1/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://security.netapp.com/advisory/ntap-20180626-0001/
https://security.gentoo.org/glsa/201805-12
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
http://www.securityfocus.com/bid/103351
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S