Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | released | 2.79-1ubuntu0.4 |
| devel | released | 2.85-1ubuntu1 |
| esm-infra-legacy/trusty | ignored | changes too intrusive |
| esm-infra/bionic | released | 2.79-1ubuntu0.4 |
| esm-infra/focal | released | 2.80-1.1ubuntu1.4 |
| esm-infra/xenial | released | 2.79-1ubuntu0.16.04.1+esm1 |
| focal | released | 2.80-1.1ubuntu1.4 |
| groovy | released | 2.82-1ubuntu1.3 |
| hirsute | released | 2.84-1ubuntu2.1 |
| impish | released | 2.85-1ubuntu1 |
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4.3 Medium
CVSS2
4 Medium
CVSS3
Связанные уязвимости
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.
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.
A flaw was found in dnsmasq in versions before 2.85. When configured t ...
4.3 Medium
CVSS2
4 Medium
CVSS3