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CVE-2021-45115

Published: 4 January 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.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
python-django
Launchpad, Ubuntu, Debian
bionic
Released (1:1.11.11-1ubuntu1.15)
focal
Released (2:2.2.12-1ubuntu0.9)
hirsute
Released (2:2.2.20-1ubuntu0.4)
impish
Released (2:2.2.24-1ubuntu1.2)
jammy
Released (2:3.2.11-1)
kinetic
Released (2:3.2.11-1)
lunar
Released (2:3.2.11-1)
upstream Needs triage

mantic
Released (2:3.2.11-1)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H