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.
References
Configurations
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History
07 Nov 2023, 03:38
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Information
Published : 2021-04-08 23:15
Updated : 2024-02-28 18:28
NVD link : CVE-2021-3448
Mitre link : CVE-2021-3448
CVE.ORG link : CVE-2021-3448
JSON object : View
Products Affected
fedoraproject
- fedora
oracle
- communications_cloud_native_core_network_function_cloud_native_environment
thekelleys
- dnsmasq
redhat
- enterprise_linux
CWE