CVE-2016-4956
5.3
MEDIUM
CVSS 3.1
EPSS 1.4%
Description
ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.
How to fix CVE-2016-4956
To remediate CVE-2016-4956, upgrade the affected package to a fixed version below.
- Debian/ntp—upgrade to 1:4.2.8p8+dfsg-1 or later
Is CVE-2016-4956 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1:4.2.8p8+dfsg-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |