ALPINE-CVE-2021-3448

ALPINE-CVE-2021-3448

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A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.

CVSS 4.0 · Mittel · Korrektur verfügbar

Veröffentlicht

2021-04-08T23:15:12.597Z

Aktualisiert

2026-10-23T17:17:56.192949738Z

Technologie-Stack: system

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