### [CVE-2016-1547](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1547)
![](https://img.shields.io/static/v1?label=Product&message=NTP&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=NTPSec&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=unspecified&color=brighgreen)

### 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.

### POC

#### Reference
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/RedHatSatellite/satellite-host-cve