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CVE-2021-45115

Good to know:

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Date: January 4, 2022

An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. UserAttributeSimilarityValidator incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.

Language: Python

Severity Score

Related Resources (18)

https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2022-1.yaml
https://docs.djangoproject.com/en/4.0/releases/security
https://www.djangoproject.com/weblog/2022/jan/04/security-releases/
https://nvd.nist.gov/vuln/detail/CVE-2021-45115
https://github.com/django/django/commit/a8b32fe13bcaed1c0b772fdc53de84abc224fb20
https://github.com/django/django/commit/2135637fdd5ce994de110affef9e67dffdf77277
https://github.com/django/django
https://security.netapp.com/advisory/ntap-20220121-0005/
https://docs.djangoproject.com/en/4.0/releases/security/
https://www.djangoproject.com/weblog/2022/jan/04/security-releases
https://security.netapp.com/advisory/ntap-20220121-0005
https://groups.google.com/forum/#!forum/django-announce
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://github.com/django/django/commit/df79ef03ac867c93caaa6be56bc69e66abfeef8f
https://github.com/advisories/GHSA-53qw-q765-4fww
https://groups.google.com/forum/#%21forum/django-announce
https://www.mend.io/vulnerability-database/CVE-2021-45115

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Top Fix

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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): NONE
Availability (A): HIGH

CVSS v2

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

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