CVE-2019-3979

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.26%
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

Frequently Asked Questions

What is the severity of CVE-2019-3979?
CVE-2019-3979 has been scored as a high severity vulnerability.
How to fix CVE-2019-3979?
To fix CVE-2019-3979, 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-2019-3979 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-3979 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-3979?
CVE-2019-3979 affects n/a MikroTik RouterOS.
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