logo
DATABASE RESOURCES PRICING ABOUT US

CVE-2021-3448

Description

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.


Affected Software


CPE Name Name Version
thekelleys:dnsmasq thekelleys dnsmasq 2.85
redhat:enterprise_linux redhat enterprise linux 8.0
fedoraproject:fedora fedoraproject fedora 32
fedoraproject:fedora fedoraproject fedora 33
fedoraproject:fedora fedoraproject fedora 34
oracle:communications_cloud_native_core_network_function_cloud_native_environment oracle communications cloud native core network function cloud native environment 1.9.0

Related