NTP users are strongly urged to take immediate action to ensure that their NTP daemons are not susceptible to being used in distributed denial-of-service (DDoS) attacks. Please also take this opportunity to defeat denial-of-service attacks by implementing Ingress and Egress filtering through BCP38.
ntp-4.2.8p15was released on 23 June 2020. It addresses 1 medium-severity security issue in ntpd, and provides 13 non-security bugfixes over 4.2.8p13.
Please see the NTP Security Notice for vulnerability and mitigation details.Are you using Autokey in production? If so, please contact Harlan - he's got some questions for you.
nextvar()which executes a
memcpy()into the name buffer without a proper length check against its maximum length of 256 bytes. Note well that we're taking about
ntpqhere. The usual worst-case effect of this vulnerability is that the specific instance of
ntpqwill crash and the person or process that did this will have stopped themselves.
ntpqmake sure there are some sanity checks on the input received from the "outside".
ntpqis run as