High severity · published Jan 5, 2022
CVE-2021-45115
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
7.5
CVSS
2.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.4% · higher than 84% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DJ
Django · Djangoproject
2.2 before 2.2.26; 3.2 before 3.2.11; 4.0 before 4.0.1 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45115
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-45115
Patch
https://docs.djangoproject.com/en/4.0/releases/security/
groups.google.com
https://groups.google.com/forum/#%21forum/django-announce
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20220121-0005/
Patch
https://www.djangoproject.com/weblog/2022/jan/04/security-releases/
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