PyPi: Django

CVE-2021-23336

Transitive

Safety vulnerability ID: 39646

This vulnerability was reviewed by experts

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

Created at Feb 15, 2021 Updated at Nov 05, 2024
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Advisory

Django versions 2.2.19, 3.0.13 and 3.1.7 include a fix for CVE-2021-23336: Web cache poisoning via 'django.utils.http.limited_parse_qsl()'. Django contains a copy of 'urllib.parse.parse_qsl' which was added to backport some security fixes. A further security fix has been issued recently such that 'parse_qsl(' no longer allows using ';' as a query parameter separator by default.

Affected package

django

Latest version: 5.1.3

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

Affected versions

Fixed versions

Vulnerability changelog

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

*February 19, 2021*

Django 2.2.19 fixes a security issue in 2.2.18.

CVE-2021-23336: Web cache poisoning via ``django.utils.http.limited_parse_qsl()``
=================================================================================

Django contains a copy of :func:`urllib.parse.parse_qsl` which was added to
backport some security fixes. A further security fix has been issued recently
such that ``parse_qsl()`` no longer allows using ``;`` as a query parameter
separator by default. Django now includes this fix. See :bpo:`42967` for
further details.


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

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Severity Details

CVSS Base Score

MEDIUM 5.9

CVSS v3 Details

MEDIUM 5.9
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
HIGH
Privileges Required (PR)
NONE
User Interaction (UI)
REQUIRED
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
LOW
Availability Availability (A)
HIGH

CVSS v2 Details

MEDIUM 4.0
Access Vector (AV)
NETWORK
Access Complexity (AC)
HIGH
Authentication (Au)
NONE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
PARTIAL
Availability Impact (A)
PARTIAL