cve/2019/CVE-2019-3979.md

### [CVE-2019-3979](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3979)
![](https://img.shields.io/static/v1?label=Product&message=MikroTik%20RouterOS&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Unrelated%20Data%20Attack%20(see%3A%20https%3A%2F%2Fwww.sans.org%2Freading-room%2Fwhitepapers%2Fdns%2Fsecurity-issues-dns-1069)&color=brighgreen)

### Description

RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below are vulnerable to a DNS unrelated data attack. The router adds all A records to its DNS cache even when the records are unrelated to the domain that was queried. Therefore, a remote attacker controlled DNS server can poison the router's DNS cache via malicious responses with additional and untrue records.

### POC

#### Reference
- https://www.tenable.com/security/research/tra-2019-46

#### Github
No PoCs found on GitHub currently.