CVE-2019-3978

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

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 15.43% Top 10%
Third-Party Advisory packetstormsecurity.com Third-Party Advisory tenable.com
Affected: n/a MikroTik RouterOS
Published at:
Updated at:

References

Link Tags
https://www.tenable.com/security/research/tra-2019-46 third party advisory
http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-3978?
CVE-2019-3978 has been scored as a high severity vulnerability.
How to fix CVE-2019-3978?
To fix CVE-2019-3978, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-3978 being actively exploited in the wild?
It is possible that CVE-2019-3978 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~15% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-3978?
CVE-2019-3978 affects n/a MikroTik RouterOS.
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