CVE-2019-3978 - RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291

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HIGH

RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291

Published Oct 28, 2019

7.5

HIGH

CVSS 3.1

EPSS 10.27%

Description

RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning

Affected products

Vendor n/a Product MikroTik RouterOS Default
unknown
Affected
- RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.

Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).

Vendor	Product	Default status	Versions
n/a	MikroTik RouterOS	unknown	Affected RouterOS 6.45.6 Stable and below. RouterOS 6.44.5 Long-term and below.

Remediation

No remediation recorded yet.

Weaknesses (1)

CWE-306

Missing Authentication

References (3)

http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html
x_refsource_MISCThird Party Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-13585
Advisory
https://www.tenable.com/security/research/tra-2019-46
x_refsource_MISCThird Party Advisory

Link	Providers	Tags
http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html		x_refsource_MISCThird Party Advisory
https://euvd.enisa.europa.eu/vulnerability/EUVD-2019-13585		Advisory
https://www.tenable.com/security/research/tra-2019-46		x_refsource_MISCThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner tenable

Published Oct 28, 2019

Updated Aug 4, 2024

Reserved Jan 3, 2019

Link CVE-2019-3978

CISA Vulnrichment

No data

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2019-3978

Red Hat

No data

ENISA EUVD

Assigner tenable

Published Oct 28, 2019

Updated Aug 4, 2024

Link EUVD-2019-13585

GitHub

No data