CVE-2019-3979

Published: Oct 29, 2019Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 3.9 / Impact: 3.6

Source: NVD

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.

Affected (2)

Products: Mikrotik: Routeros

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Mikrotik Routeros	Up to 6.45.6
Mikrotik Routeros	Up to 6.44.5

Related CWEs

Insufficient Verification of Data Authenticity

The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

References (2)

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

Source: vulnreport@tenable.com

Third Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

Timeline

No history available yet.