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cve[email protected]CVE-2023-6507
HistoryDec 08, 2023 - 7:15 p.m.

CVE-2023-6507

2023-12-0819:15:08
CWE-269
web.nvd.nist.gov
32
cpython
subprocess module
posix platforms
cve-2023-6507
security issue
privilege escalation
nvd

6.1 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.6%

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).

Affected configurations

NVD
Node
pythonpythonMatch3.12.0-
OR
pythonpythonMatch3.13.0alpha1
OR
pythonpythonMatch3.13.0alpha2

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "POSIX"
    ],
    "product": "CPython",
    "repo": "https://github.com/python/cpython",
    "vendor": "Python Software Foundation",
    "versions": [
      {
        "lessThan": "3.12.1",
        "status": "affected",
        "version": "3.12.0",
        "versionType": "python"
      },
      {
        "lessThan": "3.13.0a3",
        "status": "affected",
        "version": "3.13.0a1",
        "versionType": "python"
      }
    ]
  }
]

6.1 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

5 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

25.6%