Описание
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
A flaw was found in the Linux kernel’s implementation of the WiFi station handoff code. An attacker within the radio range could use this flaw to deny a valid device from joining the access point.
Меры по смягчению последствий
At this time there is no known mitigations to this issue other than to install the updated kernel package.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | kernel | Out of support scope | ||
| Red Hat Enterprise Linux 6 | kernel | Out of support scope | ||
| Red Hat Enterprise MRG 2 | kernel-rt | Will not fix | ||
| Red Hat Enterprise Linux 7 | kernel-rt | Fixed | RHBA-2020:3527 | 20.08.2020 |
| Red Hat Enterprise Linux 7 | kernel | Fixed | RHSA-2020:1016 | 31.03.2020 |
| Red Hat Enterprise Linux 7 | kernel-alt | Fixed | RHSA-2020:1493 | 16.04.2020 |
| Red Hat Enterprise Linux 8 | kernel-rt | Fixed | RHSA-2020:1567 | 28.04.2020 |
| Red Hat Enterprise Linux 8 | kernel | Fixed | RHSA-2020:1769 | 28.04.2020 |
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Дополнительная информация
Статус:
EPSS
6.5 Medium
CVSS3
Связанные уязвимости
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
An exploitable denial-of-service vulnerability exists in the Linux ker ...
An exploitable denial-of-service vulnerability exists in the Linux kernel prior to mainline 5.3. An attacker could exploit this vulnerability by triggering AP to send IAPP location updates for stations before the required authentication process has completed. This could lead to different denial-of-service scenarios, either by causing CAM table attacks, or by leading to traffic flapping if faking already existing clients in other nearby APs of the same wireless infrastructure. An attacker can forge Authentication and Association Request packets to trigger this vulnerability.
Уязвимость ядра операционных систем Linux, связанная с недостаточной проверкой вводимых данных и некорректной реализацией функций, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
6.5 Medium
CVSS3