CVE-2023-6507

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).

Bugs

• <https://github.com/python/cpython/issues/112334&gt;

Notes