Описание
A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the --dhcp-split-relay option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).
Меры по смягчению последствий
To mitigate this issue, ensure that the dnsmasq service is not configured with the --dhcp-split-relay option. If this option is currently in use, remove it from the dnsmasq configuration. After modifying the configuration, the dnsmasq service must be restarted for the changes to take effect. This may temporarily interrupt DHCP and DNS services provided by dnsmasq.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | dnsmasq | Not affected | ||
| Red Hat Enterprise Linux 6 | dnsmasq | Not affected | ||
| Red Hat Enterprise Linux 7 | dnsmasq | Not affected | ||
| Red Hat Enterprise Linux 8 | dnsmasq | Not affected | ||
| Red Hat Enterprise Linux 9 | dnsmasq | Not affected | ||
| Red Hat OpenShift Container Platform 4 | rhcos | Not affected |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).
A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).
Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing
A flaw was found in dnsmasq. A remote attacker could exploit an out-of ...
A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).
EPSS
7.5 High
CVSS3