CVE-2019-3979: High severity mikrotik routeros vulnerability
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2019-3979?
CVE-2019-3979 is classified as a high severity vulnerability due to the potential for DNS cache poisoning.
How do I fix CVE-2019-3979?
To fix CVE-2019-3979, upgrade your RouterOS to version 6.45.7 or above.
Which versions of RouterOS are affected by CVE-2019-3979?
CVE-2019-3979 affects RouterOS versions 6.45.6 and 6.44.5 and earlier.
What impact does CVE-2019-3979 have on DNS security?
CVE-2019-3979 can lead to DNS cache poisoning, allowing attackers to redirect network traffic.
Is there a workaround for CVE-2019-3979?
There are no known workarounds for CVE-2019-3979; the recommended action is to upgrade to a secure version.