The getresponse function in ntpq in NTP versions before 4.2.8p9 and 4.3.x before 4.3.90 allows remote attackers to cause a denial of service (infinite loop) via crafted packets with incorrect values.
CVSS Details
- 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 |
|---|---|---|---|---|
| Aix 5.3.12 Ntp_advisory6 | — | — | Dec 19, 2016 | Dec 19, 2016 |
| Aix 6.1.6 Ntp_advisory6 | — | — | Nov 3, 2017 | Jan 30, 2017 |
| Aix 6.1.9 Ntp_advisory6 | — | — | Dec 19, 2016 | Dec 19, 2016 |
| Aix 7.1.0 Ntp_advisory6 | — | — | Nov 3, 2017 | Jan 30, 2017 |
| Aix 7.1.3 Ntp_advisory6 | — | — | Nov 3, 2017 | Jan 30, 2017 |
| Aix 7.1.4 Ntp_advisory6 | — | — | Dec 19, 2016 | Dec 19, 2016 |
| Aix 7.2.0 Ntp_advisory6 | — | — | Dec 19, 2016 | Dec 19, 2016 |
| Amazon_linux | — | Upgrade ntp | Sep 19, 2018 | Feb 9, 2016 |
| Cisco Apic | — | Upgrade to the latest version of Cisco APIC to resolve this vulnerability. | May 11, 2026 | Jan 27, 2016 |
| Cisco Ise | — | — | Oct 21, 2025 | Jan 27, 2016 |
| Cisco Xe | — | Upgrade to the latest version of Cisco IOS XE | Jul 30, 2019 | Jan 30, 2017 |
| Cisco Xr Os | — | Upgrade to the latest version of Cisco IOS-XR to resolve this vulnerability. | May 19, 2021 | Jan 27, 2016 |
| Debian | — | Upgrade ntp | Jul 27, 2016 | Feb 9, 2016 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Feb 22, 2016 |
| Freebsd | — | Upgrade ntp-develUpgrade FreeBSDUpgrade ntp | Dec 10, 2025 | Jan 21, 2016 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Jan 30, 2017 |
| Huawei Euleros 2_0_sp1 | — | Upgrade ntpdateUpgrade ntp | Nov 30, 2017 | Jan 30, 2017 |
| Ibm Aix | — | Apply the fix or workaround for ntp_advisory6 | Nov 30, 2017 | Jan 30, 2017 |
| Ntp | — | Upgrade to the latest version of NTP | Feb 23, 2023 | Jan 30, 2017 |
| Oracle Solaris | — | Upgrade service/network/ntp to version 4.2.8.6-0.175.3.6.0.1.0 on Solaris 11.3 | May 29, 2017 | Jan 30, 2017 |
| Oracle_linux | — | Upgrade ntpUpgrade ntp-perlUpgrade ntp-docUpgrade ntpdateUpgrade sntp | Nov 9, 2016 | Nov 9, 2016 |
| Panos | — | Update PAN-OS 6.1 to the latest workaround for your deviceUpgrade PAN-OS 7.0 to the latest versionUpdate PAN-OS 5.0 to the latest workaround for your deviceUpdate PAN-OS 5.1 to the latest workaround for your deviceUpdate PAN-OS 7.1 to the latest workaround for your deviceUpdate PAN-OS 6.0 to the latest workaround for your device | Oct 11, 2016 | Feb 9, 2016 |
| Redhat_linux | — | Upgrade ntpdateUpgrade ntp-perlUpgrade ntp-debuginfoUpgrade ntp-docNo solution existsUpgrade ntpUpgrade sntp | Nov 4, 2016 | Feb 9, 2016 |
| Suse | — | Upgrade yast2-ntp-clientUpgrade yast2-ntp-client-devel-docUpgrade ntp-docUpgrade ntp | Apr 28, 2016 | Feb 9, 2016 |
| Ubuntu | — | Upgrade ntp | Oct 7, 2016 | Feb 9, 2016 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jan 20, 2025 | Jan 30, 2017 |
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