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CVE-2021-33571

Good to know:

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Date: June 7, 2021

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+..) .

Language: Python

Severity Score

Related Resources (18)

https://www.djangoproject.com/weblog/2021/jun/02/security-releases/
https://security.netapp.com/advisory/ntap-20210727-0004/
https://nvd.nist.gov/vuln/detail/CVE-2021-33571
https://security.netapp.com/advisory/ntap-20210727-0004
https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2021-99.yaml
https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
https://github.com/django/django
https://docs.djangoproject.com/en/3.2/releases/security/
https://www.djangoproject.com/weblog/2021/jun/02/security-releases
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo
https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
https://docs.djangoproject.com/en/3.2/releases/security
https://github.com/advisories/GHSA-p99v-5w3c-jqq9
https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
https://www.mend.io/vulnerability-database/CVE-2021-33571

Severity Score

Weakness Type (CWE)

Server-Side Request Forgery (SSRF)

CWE-918

Top Fix

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Upgrade to version Django - 2.2.24, 3.1.12, 3.2.4

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CVSS v3.1

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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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