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 Details
- CVSS 3.1 Base Score: 4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | alma-upgrade-dnsmasqalma-upgrade-dnsmasq-utils | May 4, 2022 | Apr 8, 2021 | |
| Alpine Linux | alpine-linux-upgrade-dnsmasq | Mar 26, 2024 | Apr 8, 2021 | |
| Centos_linux | — | centos-upgrade-dnsmasqcentos-upgrade-dnsmasq-debuginfocentos-upgrade-dnsmasq-debugsourcecentos-upgrade-dnsmasq-utilscentos-upgrade-dnsmasq-utils-debuginfo | Nov 10, 2021 | Apr 8, 2021 |
| Debian | debian-upgrade-dnsmasq | Jul 30, 2024 | Apr 8, 2021 | |
| Freebsd | freebsd-upgrade-package-dnsmasqfreebsd-upgrade-package-dnsmasq-devel | Mar 18, 2021 | Mar 18, 2021 | |
| Gentoo Linux | gentoo-linux-upgrade-net-dns-dnsmasq | May 28, 2021 | Apr 8, 2021 | |
| Huawei Euleros 2_0_sp5 | huawei-euleros-2_0_sp5-upgrade-dnsmasqhuawei-euleros-2_0_sp5-upgrade-dnsmasq-utils | Mar 9, 2023 | Apr 8, 2021 | |
| Huawei Euleros 2_0_sp8 | huawei-euleros-2_0_sp8-upgrade-dnsmasqhuawei-euleros-2_0_sp8-upgrade-dnsmasq-utils | Sep 24, 2021 | Apr 8, 2021 | |
| Huawei Euleros 2_0_sp9 | huawei-euleros-2_0_sp9-upgrade-dnsmasq | Aug 10, 2021 | Apr 8, 2021 | |
| Oracle_linux | — | oracle-linux-upgrade-dnsmasqoracle-linux-upgrade-dnsmasq-utils | Jul 22, 2024 | Mar 12, 2021 |
| Redhat_linux | redhat-upgrade-dnsmasqredhat-upgrade-dnsmasq-debuginforedhat-upgrade-dnsmasq-debugsourceredhat-upgrade-dnsmasq-utilsredhat-upgrade-dnsmasq-utils-debuginfo | Nov 10, 2021 | Apr 8, 2021 | |
| Rocky_linux | rocky-upgrade-dnsmasqrocky-upgrade-dnsmasq-debuginforocky-upgrade-dnsmasq-debugsourcerocky-upgrade-dnsmasq-utilsrocky-upgrade-dnsmasq-utils-debuginfo | Mar 12, 2024 | Apr 8, 2021 | |
| Suse | — | suse-upgrade-dnsmasqsuse-upgrade-dnsmasq-utils | Oct 28, 2021 | Mar 17, 2021 |
| Ubuntu | ubuntu-pro-upgrade-dnsmasqubuntu-pro-upgrade-dnsmasq-baseubuntu-pro-upgrade-dnsmasq-utilsubuntu-upgrade-dnsmasqubuntu-upgrade-dnsmasq-baseubuntu-upgrade-dnsmasq-utils | Jun 3, 2021 | Mar 17, 2021 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Apr 8, 2021 |
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