PyPi: Django

CVE-2020-24583

Safety vulnerability ID: 38749

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Sep 01, 2020 Updated at Dec 04, 2024
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Advisory

Django 2.2.16, 3.0.10 and 3.1.1 include a fix for CVE-2020-24583: An issue was discovered in Django 2.2 before 2.2.16, 3.0 before 3.0.10, and 3.1 before 3.1.1 (when Python 3.7+ is used). FILE_UPLOAD_DIRECTORY_PERMISSIONS mode was not applied to intermediate-level directories created in the process of uploading files. It was also not applied to intermediate-level collected static directories when using the collectstatic management command.
#NOTE: This vulnerability affects only users of Python versions above 3.7.
https://www.djangoproject.com/weblog/2020/sep/01/security-releases

Affected package

django

Latest version: 5.1.4

A high-level Python web framework that encourages rapid development and clean, pragmatic design.

Affected versions

Fixed versions

Vulnerability changelog

===========================

*September 1, 2020*

Django 2.2.16 fixes two security issues and two data loss bugs in 2.2.15.

CVE-2020-24583: Incorrect permissions on intermediate-level directories on Python 3.7+
======================================================================================

On Python 3.7+, :setting:`FILE_UPLOAD_DIRECTORY_PERMISSIONS` mode was not
applied to intermediate-level directories created in the process of uploading
files and to intermediate-level collected static directories when using the
:djadmin:`collectstatic` management command.

You should review and manually fix permissions on existing intermediate-level
directories.

CVE-2020-24584: Permission escalation in intermediate-level directories of the file system cache on Python 3.7+
===============================================================================================================

On Python 3.7+, the intermediate-level directories of the file system cache had
the system's standard umask rather than ``0o077`` (no group or others
permissions).

Bugfixes
========

* Fixed a data loss possibility in the
:meth:`~django.db.models.query.QuerySet.select_for_update()`. When using
related fields pointing to a proxy model in the ``of`` argument, the
corresponding model was not locked (:ticket:`31866`).

* Fixed a data loss possibility, following a regression in Django 2.0, when
copying model instances with a cached fields value (:ticket:`31863`).


===========================

Resources

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Severity Details

CVSS Base Score

HIGH 7.5

CVSS v3 Details

HIGH 7.5
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
LOW
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
HIGH
Integrity Impact (I)
NONE
Availability Availability (A)
NONE

CVSS v2 Details

MEDIUM 5.0
Access Vector (AV)
NETWORK
Access Complexity (AC)
LOW
Authentication (Au)
NONE
Confidentiality Impact (C)
PARTIAL
Integrity Impact (I)
NONE
Availability Impact (A)
NONE