CVE-2023-6507 (GCVE-0-2023-6507)

Vulnerability from cvelistv5 – Published: 2023-12-08 18:20 – Updated: 2026-07-31 14:09
VLAI
Title
Groups not dropped before running subprocess when using empty 'extra_groups' parameter
Summary
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`).
Severity
6.1 (Medium)
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-01-31 20:16 UTC
CWE
  • CWE-269 - Improper Privilege Management
Assigner
PSF CNA under the mitre root
CNA scorecard B 80/100 over 28 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Python Software Foundation CPython Affected: 0 , < 3.12.1 (python)
Affected: 3.13.0a1 , < 3.13.0a3 (python)
guessed Create a notification for this product.
python cpython Affected: 3.13.0
    cpe:2.3:a:python:cpython:3.13.0:*:*:*:*:*:*:*
Create a notification for this product.
python cpython Affected: 3.12.0
    cpe:2.3:a:python:cpython:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website
To clipboard 

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}



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