ALT-PU-2021-1947-1

Обновление пакета apache2 в ветке sisyphus

Версия2.4.48-alt1

Задание#274038

Опубликовано2021-06-08

Макс. серьёзностьHIGH

Серьёзность:

Закрытые проблемы (2)

HIGH7.5

Уязвимость реализации протокола HTTP/2 модуля mod_http2 веб-сервера Apache HTTP Server, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2021-08-06Изменено: 2023-11-21

CVSS 3.xВЫСОКАЯ 7.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS 2.0ВЫСОКАЯ 7.8

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C

Ссылки

CVE-2021-31618

HIGH7.5

Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. This issue affected mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released.

Опубликовано: 2021-06-15Изменено: 2024-11-21

CVSS 2.0СРЕДНЯЯ 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS 3.xВЫСОКАЯ 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Ссылки