Описание
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
php-fpm has a vulnerability which may lead to local privilege escalation. This vulnerability is hard to exploit as the attack needs to escape the FPM sandbox mechanism. When a complete attack is achieved it may lead to risk for confidentiality, data integrity, and system availability.
Отчет
This vulnerability affects only systems with php-fpm enabled on its configuration. For an attack to be completed successfully, the attacker needs to chain this vulnerability with some other vulnerability that allows escape from the FPM sandbox first.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | php | Out of support scope | ||
| Red Hat Enterprise Linux 7 | php | Out of support scope | ||
| Red Hat Enterprise Linux 8 | php:7.3/php | Affected | ||
| Red Hat Enterprise Linux 9 | php | Not affected | ||
| Red Hat Enterprise Linux 8 | php | Fixed | RHSA-2022:1935 | 10.05.2022 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 | rh-php73-php | Fixed | RHSA-2022:5491 | 04.07.2022 |
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Дополнительная информация
Статус:
EPSS
6.4 Medium
CVSS3
Связанные уязвимости
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 and 8.0.x below 8.0.12, when running PHP FPM SAPI with main FPM daemon process running as root and child worker processes running as lower-privileged users, it is possible for the child processes to access memory shared with the main process and write to it, modifying it in a way that would cause the root process to conduct invalid memory reads and writes, which can be used to escalate privileges from local unprivileged user to the root user.
In PHP versions 7.3.x up to and including 7.3.31, 7.4.x below 7.4.25 a ...
EPSS
6.4 Medium
CVSS3