VDB
CVE-2016-1547
CVE-2016-1547
PUBLISHED
CVSS 5.300000190734863 MEDIUM
An off-path attacker can cause a preemptible client association to be demobilized in NTP 4.2.8p4 and earlier and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92 by sending a crypto NAK packet to a victim client with a spoofed source address of an existing associated peer. This is true even if authentication is enabled.
EPSS 5.07% · 92.1th percentile
Risk Scores
CVSS 3.0
5.300000190734863
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score
5.07%
92.1th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:14.04:LTS | ntp | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2, 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3, 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 |
| Ubuntu:16.04:LTS | ntp | 0, 1:4.2.6.p5+dfsg-3ubuntu8, 1:4.2.6.p5+dfsg-3ubuntu9 |
Timeline
- Apr 26, 2016 CVE Published
- May 26, 2017 PoC Published
- Oct 2, 2020 PoC Published
- Nov 6, 2020 PoC Published
- Sep 6, 2021 PoC Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- Jul 13, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Dec 20, 2022 EPSS Score
- Feb 11, 2023 EPSS Score
- Apr 5, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2016-1547 third-party-advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security third-party-advisory
- https://ubuntu.com/security/notices/USN-3096-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2016-1547 third-party-advisory