CVEs-PoC/2014/CVE-2014-0239.md

### [CVE-2014-0239](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0239)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/Live-Hack-CVE/CVE-2014-0239