A malicious authenticated peer can create arbitrarily-many ephemeral associations in order to win the clock selection algorithm in ntpd in NTP 4.2.8p4 and earlier and NTPsec 3e160db8dc248a0bcb053b56a80167dc742d2b74 and a5fb34b9cc89b92a8fef2f459004865c93bb7f92 and modify a victim's clock.
CVSS Details
- CVSS 3.1 Base Score: 6.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon_linux | — | amazon-linux-upgrade-ntp | May 11, 2018 | Jan 6, 2017 |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Jan 6, 2017 | |
| Cisco Apic | cisco-apic-update-latest | May 11, 2026 | Apr 28, 2016 | |
| Debian | debian-upgrade-ntp | Jul 30, 2024 | Jan 6, 2017 | |
| F5 Big Ip | f5-bigip-upgrade-latest | Jun 17, 2026 | Jun 13, 2016 | |
| Freebsd | freebsd-upgrade-package-ntpfreebsd-upgrade-package-ntp-develfreebsd-upgrade-base-10_3-release-p1freebsd-upgrade-base-10_2-release-p15freebsd-upgrade-base-10_1-release-p32freebsd-upgrade-base-9_3-release-p40freebsd-upgrade-base-11_1-release-p7freebsd-upgrade-base-10_4-release-p6freebsd-upgrade-base-10_3-release-p27 | Jan 6, 2017 | Apr 27, 2016 | |
| Gentoo Linux | gentoo-linux-upgrade-net-misc-ntp | Oct 30, 2017 | Jan 6, 2017 | |
| Hpux | — | hpux-update-ntp | Dec 9, 2019 | Jan 6, 2017 |
| Ibm Aix | ibm-aix-ntp_advisory10 | Aug 16, 2018 | Jan 6, 2017 | |
| Ntp | ntp-upgrade-latest | Feb 23, 2023 | Jan 6, 2017 | |
| Oracle Solaris | oracle-solaris-11-3-upgrade-service-network-ntp-4-2-8-8-0-175-3-12-0-1-0oracle-solaris-11-4-upgrade-service-network-ntp-4-2-8-12-11-4-8-0-1-3-0 | May 29, 2017 | Jan 6, 2017 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Apr 26, 2016 | |
| Suse | — | suse-upgrade-ntpsuse-upgrade-ntp-doc | May 11, 2016 | May 11, 2016 |
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