7.5
HIGH
CVE-2021-33571
Django IP Address Validation Octal Injection
Description

In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .

INFO

Published Date :

June 8, 2021, 6:15 p.m.

Last Modified :

Nov. 21, 2024, 6:09 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-33571 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fedoraproject fedora
1 Djangoproject django
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-33571.

URL Resource
https://docs.djangoproject.com/en/3.2/releases/security/ Patch Vendor Advisory
https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
https://security.netapp.com/advisory/ntap-20210727-0004/ Third Party Advisory
https://www.djangoproject.com/weblog/2021/jun/02/security-releases/ Patch Vendor Advisory
https://docs.djangoproject.com/en/3.2/releases/security/ Patch Vendor Advisory
https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
https://security.netapp.com/advisory/ntap-20210727-0004/ Third Party Advisory
https://www.djangoproject.com/weblog/2021/jun/02/security-releases/ Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-33571 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-33571 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://docs.djangoproject.com/en/3.2/releases/security/
    Added Reference https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
    Added Reference https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
    Added Reference https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
    Added Reference https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
    Added Reference https://security.netapp.com/advisory/ntap-20210727-0004/
    Added Reference https://www.djangoproject.com/weblog/2021/jun/02/security-releases/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Dec. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc [No types assigned]
    Added Reference MITRE https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e [No types assigned]
    Added Reference MITRE https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d [No types assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
  • Modified Analysis by [email protected]

    Feb. 22, 2022

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/ Mailing List, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 11, 2022

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/ [No Types Assigned]
  • Modified Analysis by [email protected]

    Dec. 02, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210727-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20210727-0004/ Third Party Advisory
  • CVE Modified by [email protected]

    Jul. 30, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210727-0004/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 17, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type https://docs.djangoproject.com/en/3.2/releases/security/ No Types Assigned https://docs.djangoproject.com/en/3.2/releases/security/ Patch, Vendor Advisory
    Changed Reference Type https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo No Types Assigned https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo Mailing List, Third Party Advisory
    Changed Reference Type https://www.djangoproject.com/weblog/2021/jun/02/security-releases/ No Types Assigned https://www.djangoproject.com/weblog/2021/jun/02/security-releases/ Patch, Vendor Advisory
    Added CWE NIST CWE-918
    Added CPE Configuration OR *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 2.2 up to (excluding) 2.2.24 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (excluding) 3.1.12 *cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:* versions from (including) 3.2 up to (excluding) 3.2.4
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-33571 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-33571 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.01 }} -0.11%

score

0.00738

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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