Описание
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
A resource consumption vulnerability was found in nghttp2. This flaw allows an attacker to repeatedly construct an overly large HTTP/2 SETTINGS frame with a length of 14,400 bytes that causes excessive CPU usage, leading to a denial of service.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 8 | nodejs:14/nodejs | Not affected | ||
| JBoss Core Services on RHEL 6 | jbcs-httpd24-curl | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_cluster-native | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_http2 | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_jk | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_md | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-mod_security | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-nghttp2 | Fixed | RHSA-2020:2644 | 22.06.2020 |
| JBoss Core Services on RHEL 7 | jbcs-httpd24-curl | Fixed | RHSA-2020:2644 | 22.06.2020 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS fra ...
EPSS
7.5 High
CVSS3