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
21 Nov 2024, 06:21
Type | Values Removed | Values Added |
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References | () https://bugzilla.redhat.com/show_bug.cgi?id=1939368 - Exploit, Issue Tracking, Patch, Third Party Advisory | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ - | |
References | () https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ - | |
References | () https://security.gentoo.org/glsa/202105-20 - Third Party Advisory | |
References | () https://www.oracle.com/security-alerts/cpujan2022.html - Patch, Third Party Advisory |
07 Nov 2023, 03:38
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Information
Published : 2021-04-08 23:15
Updated : 2024-11-21 06:21
NVD link : CVE-2021-3448
Mitre link : CVE-2021-3448
CVE.ORG link : CVE-2021-3448
JSON object : View
Products Affected
oracle
- communications_cloud_native_core_network_function_cloud_native_environment
fedoraproject
- fedora
redhat
- enterprise_linux
thekelleys
- dnsmasq
CWE