Описание
An issue was found in CPython 3.12.0 subprocess module on POSIX platforms. The issue was fixed in CPython 3.12.1 and does not affect other stable releases.
When using the extra_groups= parameter with an empty list as a value (ie extra_groups=[]) the logic regressed to not call setgroups(0, NULL) before calling exec(), thus not dropping the original processes' groups before starting the new process. There is no issue when the parameter isn't used or when any value is used besides an empty list.
This issue only impacts CPython processes run with sufficient privilege to make the setgroups system call (typically root).
A flaw was found in Python's subprocess module. When creating a new subprocess, the developer may specify a list of extra groups through the 'extra_groups=` parameter. When this optional parameter is informed with an empty list, the module fails to properly clean the associated groups from the new sub-process's parent before executing the new sub-process. If the parent process has high privileges, the sub-process created may have unnecessarily high privileges, leading to possible confidentiality and integrity issues when properly exploited.
Отчет
The Python versions as distributed with Red Hat Enterprise Linux 6, 7, 8 and 9 are not vulnerable to this flaw, as it doesn't contain the affected code or it ships a version where the fix is already present.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | python3.12 | Not affected | ||
| Red Hat Enterprise Linux 6 | python | Not affected | ||
| Red Hat Enterprise Linux 7 | python | Not affected | ||
| Red Hat Enterprise Linux 7 | python3 | Not affected | ||
| Red Hat Enterprise Linux 8 | python27:2.7/python2 | Not affected | ||
| Red Hat Enterprise Linux 8 | python3 | Not affected | ||
| Red Hat Enterprise Linux 8 | python3.11 | Not affected | ||
| Red Hat Enterprise Linux 8 | python3.12 | Not affected | ||
| Red Hat Enterprise Linux 8 | python36:3.6/python36 | Not affected | ||
| Red Hat Enterprise Linux 8 | python39:3.9/python39 | Not affected |
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Дополнительная информация
Статус:
EPSS
6.1 Medium
CVSS3
Связанные уязвимости
An issue was found in CPython 3.12.0 `subprocess` module on POSIX platforms. The issue was fixed in CPython 3.12.1 and does not affect other stable releases. When using the `extra_groups=` parameter with an empty list as a value (ie `extra_groups=[]`) the logic regressed to not call `setgroups(0, NULL)` before calling `exec()`, thus not dropping the original processes' groups before starting the new process. There is no issue when the parameter isn't used or when any value is used besides an empty list. This issue only impacts CPython processes run with sufficient privilege to make the `setgroups` system call (typically `root`).
An issue was found in CPython 3.12.0 `subprocess` module on POSIX platforms. The issue was fixed in CPython 3.12.1 and does not affect other stable releases. When using the `extra_groups=` parameter with an empty list as a value (ie `extra_groups=[]`) the logic regressed to not call `setgroups(0, NULL)` before calling `exec()`, thus not dropping the original processes' groups before starting the new process. There is no issue when the parameter isn't used or when any value is used besides an empty list. This issue only impacts CPython processes run with sufficient privilege to make the `setgroups` system call (typically `root`).
An issue was found in CPython 3.12.0 `subprocess` module on POSIX plat ...
An issue was found in CPython 3.12.0 `subprocess` module on POSIX platforms. The issue was fixed in CPython 3.12.1 and does not affect other stable releases. When using the `extra_groups=` parameter with an empty list as a value (ie `extra_groups=[]`) the logic regressed to not call `setgroups(0, NULL)` before calling `exec()`, thus not dropping the original processes' groups before starting the new process. There is no issue when the parameter isn't used or when any value is used besides an empty list. This issue only impacts CPython processes run with sufficient privilege to make the `setgroups` system call (typically `root`).
EPSS
6.1 Medium
CVSS3