CVE-2019-3979: 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…

PriorityP338high7.5CVSS 3.1

AVNACLPRNUINSUCNIHAN

EPSS

0.92%

55.7th percentile

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

2 ranges

Vendor	Product	Version range	Fixed in
mikrotik	routeros	<= 6.44.5	—
mikrotik	routeros	<= 6.45.6	—

CVSS provenance

nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N

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