ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows an off-path attacker to block unauthenticated synchronization via a server mode packet with a spoofed source IP address, because transmissions are rescheduled even when a packet lacks a valid origin timestamp.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- CVSS 3.0 Base Score: 5.9
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade ntp-debuginfoUpgrade ntpdateUpgrade ntp-perlUpgrade ntp-docUpgrade ntpUpgrade sntp | Jul 21, 2020 | Apr 17, 2020 |
| Centos_linux | — | Upgrade ntp-debuginfoUpgrade ntpUpgrade sntpUpgrade ntpdateUpgrade ntp-docUpgrade ntp-perl | Jun 24, 2020 | Apr 17, 2020 |
| Debian | — | Upgrade ntp | May 6, 2020 | Apr 17, 2020 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Jun 2, 2020 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Jul 28, 2020 | Apr 17, 2020 |
| Huawei Euleros 2_0_sp2 | — | Upgrade ntpUpgrade ntpdate | Jun 17, 2020 | Apr 17, 2020 |
| Huawei Euleros 2_0_sp5 | — | Upgrade ntpUpgrade ntpdateUpgrade sntp | Sep 3, 2020 | Apr 17, 2020 |
| Huawei Euleros 2_0_sp8 | — | Upgrade ntpUpgrade sntpUpgrade ntpdate | Jul 31, 2020 | Apr 17, 2020 |
| Ibm Aix | — | Apply the fix or workaround for ntp_advisory13 | Oct 27, 2020 | Apr 17, 2020 |
| Ntp | — | Upgrade NTP to version 4.3.100 | Feb 23, 2023 | Apr 17, 2020 |
| Oracle Solaris | — | Upgrade service/network/ntp to version 4.2.8.14-11.4.24.0.1.75.1 on Solaris 11.4 | Jan 19, 2021 | Apr 17, 2020 |
| Oracle_linux | — | Upgrade sntpUpgrade ntp-docUpgrade ntpdateUpgrade ntp-perlUpgrade ntp | Jun 24, 2020 | Mar 3, 2020 |
| Redhat_linux | — | Upgrade ntp-debuginfoUpgrade sntpUpgrade ntpdateNo solution existsUpgrade ntp-perlUpgrade ntpUpgrade ntp-doc | Jun 24, 2020 | Apr 17, 2020 |
| Suse | — | Upgrade ntpUpgrade ntp-doc | Jul 1, 2020 | Apr 17, 2020 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Apr 17, 2020 |
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