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CVE-2023-6507

MEDIUM
Published 2023-12-08T18:20:49.583Z
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Expert Analysis

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CVSS Score

V3.1
6.1
/10
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.000
probability
of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.116
Higher than 11.6% of all CVEs

Attack Vector Metrics

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
NONE

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`).

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Python Software Foundation

CPython

Affected Versions:

3.12.0 3.13.0a1
python

cpython

Affected Versions:

3.13.0
python

cpython

Affected Versions:

3.12.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed MODERATE

GHSA-4wxh-fpjf-c8wf

Advisory Details

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`).

CVSS Scoring

CVSS Score

5.0

CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-6507
WEB https://github.com/python/cpython/issues/112334
WEB https://github.com/python/cpython/pull/112617
WEB https://github.com/python/cpython/commit/10e9bb13b8dcaa414645b9bd10718d8f7179e82b
WEB https://github.com/python/cpython/commit/85bbfa8a4bbdbb61a3a84fbd7cb29a4096ab8a06
WEB https://github.com/python/cpython/commit/9fe7655c6ce0b8e9adc229daf681b6d30e6b1610
WEB https://mail.python.org/archives/list/[email protected]/thread/AUL7QFHBLILGISS7U63B47AYSSGJJQZD

Advisory provided by GitHub Security Advisory Database. Published: December 8, 2023, Modified: May 8, 2024

References

https://github.com/python/cpython/issues/112334
https://mail.python.org/archives/list/[email protected]/thread/AUL7QFHBLILGISS7U63B47AYSSGJJQZD/
https://github.com/python/cpython/commit/9fe7655c6ce0b8e9adc229daf681b6d30e6b1610
https://github.com/python/cpython/commit/10e9bb13b8dcaa414645b9bd10718d8f7179e82b
https://github.com/python/cpython/commit/85bbfa8a4bbdbb61a3a84fbd7cb29a4096ab8a06
Published: 2023-12-08T18:20:49.583Z
Last Modified: 2024-08-02T08:35:13.267Z
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