PSF-2023-12
See a problem?- Import Source
- https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2023-12.json
- JSON Data
- https://api.osv.dev/v1/vulns/PSF-2023-12
- Aliases
- Published
- 2023-12-08T18:20:49.583Z
- Modified
- 2024-06-14T20:16:06.490719Z
- Summary
- Groups not dropped before running subprocess when using empty 'extra_groups' parameter
- Details
-
An issue was found in CPython 3.12.0
subprocessmodule 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 (ieextra_groups=[]) the logic regressed to not callsetgroups(0, NULL)before callingexec(), 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
setgroupssystem call (typicallyroot). - Database specific
{ "cwe_ids": [] }- References
-
- https://github.com/python/cpython/issues/112334
- https://mail.python.org/archives/list/security-announce@python.org/thread/AUL7QFHBLILGISS7U63B47AYSSGJJQZD/
- https://github.com/python/cpython/commit/9fe7655c6ce0b8e9adc229daf681b6d30e6b1610
- https://github.com/python/cpython/commit/10e9bb13b8dcaa414645b9bd10718d8f7179e82b
- https://github.com/python/cpython/commit/85bbfa8a4bbdbb61a3a84fbd7cb29a4096ab8a06