CVE-2019-3979

HIGH

MikroTik RouterOS < 6.44.5 and < 6.45.6 - DNS Cache Poisoning via Unrelated A Records

Title source: llm
STIX 2.1

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.

References (1)

Core 1
Core References
Third Party Advisory x_refsource_misc
https://www.tenable.com/security/research/tra-2019-46

Scores

CVSS v3 7.5
EPSS 0.0092
EPSS Percentile 55.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-345
Status published
Products (2)
mikrotik/routeros < 6.44.5
mikrotik/routeros < 6.45.6
Published Oct 29, 2019
Tracked Since Feb 18, 2026