CVEvulnerability

CVE-2016-1547

5.3 MEDIUM Published 2017-01-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2017-01-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
5.3 MEDIUM — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-20

Description

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.

Affected configurations

• ntp ntp (<= 4.2.8)

Related

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References