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CVE-2021-45115

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5204-1
Posted Jan 5, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5204-1 - Chris Bailey discovered that Django incorrectly handled evaluating submitted passwords. A remote attacker could possibly use this issue to consume resources, resulting in a denial of service. Dennis Brinkrolf discovered that Django incorrectly handled the dictsort template filter. A remote attacker could possibly use this issue to obtain sensitive information. Dennis Brinkrolf discovered that Django incorrectly handled certain file names. A remote attacker could possibly use this issue to save files to arbitrary filesystem locations.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2021-45115, CVE-2021-45116, CVE-2021-45452
MD5 | 3c5f59d38773c417ee1b5489cd2571eb
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