NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."
CVSS Details
- CVSS 3.1 Base Score: 7.7
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Aix 5.3.12 Ntp_advisory7 | — | — | Dec 19, 2016 | Jan 26, 2016 |
| Aix 6.1.6 Ntp_advisory7 | — | — | Nov 3, 2017 | Jan 26, 2016 |
| Aix 6.1.9 Ntp_advisory7 | — | — | Dec 19, 2016 | Jan 26, 2016 |
| Aix 7.1.0 Ntp_advisory7 | — | — | Nov 3, 2017 | Jan 26, 2016 |
| Aix 7.1.3 Ntp_advisory7 | — | — | Nov 3, 2017 | Jan 26, 2016 |
| Aix 7.1.4 Ntp_advisory7 | — | — | Dec 19, 2016 | Jan 26, 2016 |
| Aix 7.2.0 Ntp_advisory7 | — | — | Dec 19, 2016 | Jan 26, 2016 |
| Amazon_linux | — | Upgrade ntp | Sep 19, 2018 | Jan 26, 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 26, 2016 |
| 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 | Jan 26, 2016 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Feb 23, 2016 |
| Freebsd | — | Upgrade ntp-develUpgrade ntpUpgrade FreeBSD | Dec 10, 2025 | Jan 21, 2016 |
| Gentoo Linux | — | Upgrade net-misc/ntp. | Oct 30, 2017 | Jan 26, 2016 |
| Huawei Euleros 2_0_sp1 | — | Upgrade ntpdateUpgrade ntp | Nov 30, 2017 | Jan 26, 2016 |
| Ibm Aix | — | Apply the fix or workaround for ntp_advisory7 | Nov 30, 2017 | Jan 26, 2016 |
| Ntp | — | Upgrade NTP to version 4.3.90Upgrade NTP to version 4.2.8 | Feb 23, 2023 | Jan 26, 2016 |
| 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 26, 2016 |
| Oracle_linux | — | Upgrade ntpdateUpgrade ntp-docUpgrade ntp-perlUpgrade ntpUpgrade sntp | Nov 9, 2016 | Jan 26, 2016 |
| Panos | — | Update PAN-OS 5.1 to the latest workaround for your deviceUpdate PAN-OS 6.0 to the latest workaround for your deviceUpdate PAN-OS 6.1 to the latest workaround for your deviceUpdate PAN-OS 5.0 to the latest workaround for your deviceUpgrade PAN-OS 7.0 to the latest versionUpdate PAN-OS 7.1 to the latest workaround for your device | Oct 12, 2016 | Jan 26, 2016 |
| Redhat_linux | — | Upgrade ntp-perlNo solution existsUpgrade ntp-docUpgrade ntpdateUpgrade ntp-debuginfoUpgrade ntpUpgrade sntp | Nov 4, 2016 | Jan 26, 2016 |
| Suse | — | Upgrade yast2-ntp-clientUpgrade ntp-docUpgrade ntpUpgrade yast2-ntp-client-devel-doc | Apr 28, 2016 | Jan 26, 2016 |
| Ubuntu | — | Upgrade ntp | Oct 7, 2016 | Jan 26, 2016 |
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