CVE-2023-6507
Groups not dropped before running subprocess when using empty 'extra_groups' parameter
MEDIUM 6.1
En bref
- Source
- NVD
- EPSS
- EPSS 1.34 % · centile 71 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- PSF
- Statut NVD
- Modified
Description
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`).
Faiblesses (CWE)
- CWE-269 — Gestion incorrecte des privilèges
Références
- 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
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | PSF |
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N | NVD · cna@python.org (Secondary) |
| CVSS 3.1 | MEDIUM 4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2023-58738
- GCVE · GCVE-0-2023-6507
Configurations affectées (CPE NVD)
cpe:2.3:a:python:python:3.12.0:-:*:*:*:*:*:*cpe:2.3:a:python:python:3.13.0:alpha1:*:*:*:*:*:*cpe:2.3:a:python:python:3.13.0:alpha2:*:*:*:*:*:*
Produits affectés
| Produit | Versions |
|---|---|
| Python Software Foundation · CPython | affected 0 < 3.12.1 ; affected 3.13.0a1 < 3.13.0a3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |