Описание
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.
A vulnerability was discovered in Apache httpd, in mod_remoteip. A trusted proxy using the "PROXY" protocol could send specially crafted headers that can cause httpd to experience a stack buffer overflow or NULL pointer dereference, leading to a crash or other potential consequences.
This issue could only be exploited by configured trusted intermediate proxy servers. HTTP clients such as browsers could not exploit the vulnerability.
Меры по смягчению последствий
This flaw is only exploitable if RemoteIP* directives are used in Apache httpd configuration. The following command can be used to search for possible vulnerable configurations: grep -R '^\s*RemoteIP' /etc/httpd/ See https://httpd.apache.org/docs/2.4/mod/mod_remoteip.html
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 5 | httpd | Not affected | ||
| Red Hat Enterprise Linux 6 | httpd | Not affected | ||
| Red Hat Enterprise Linux 7 | httpd | Not affected | ||
| Red Hat JBoss Enterprise Web Server 2 | httpd | Out of support scope | ||
| Red Hat JBoss Enterprise Web Server 2 | httpd22 | Out of support scope | ||
| Red Hat JBoss Web Server 3 | httpd24 | Out of support scope | ||
| JBoss Core Services Apache HTTP Server 2.4.37 SP2 | httpd | Fixed | RHSA-2020:1336 | 06.04.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-apr | Fixed | RHSA-2020:1337 | 06.04.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-brotli | Fixed | RHSA-2020:1337 | 06.04.2020 |
| JBoss Core Services on RHEL 6 | jbcs-httpd24-httpd | Fixed | RHSA-2020:1337 | 06.04.2020 |
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Дополнительная информация
Статус:
EPSS
6.6 Medium
CVSS3
Связанные уязвимости
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured ...
In Apache HTTP Server 2.4.32-2.4.39, when mod_remoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY header could trigger a stack buffer overflow or NULL pointer deference. This vulnerability could only be triggered by a trusted proxy and not by untrusted HTTP clients.
Уязвимость модуля mod_remoteip веб-сервера Apache HTTP Server, позволяющая нарушителю оказать воздействие на конфиденциальность, целостность и доступность защищаемой информации
EPSS
6.6 Medium
CVSS3