CVE & CISA-KEV Catalog

CVE-2021-45115

HIGHEPSS 82th pctl
7.5
CVSS v3
NVD

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.

How to fix

Remediation Available
python-djangoDebian
Fixed in:2:2.2.26-1~deb11u1CVE-2021-45115
Fixed in:2:3.2.11-1CVE-2021-45115
Fixed in:2:3.2.11-1CVE-2021-45115
Fixed in:2:3.2.11-1CVE-2021-45115
python-djangoUbuntu
Fixed in:1:1.11.11-1ubuntu1.15USN-5204-1
Fixed in:2:2.2.12-1ubuntu0.9USN-5204-1
python3-djangoUbuntu
Fixed in:1:1.11.11-1ubuntu1.15USN-5204-1
Fixed in:2:2.2.12-1ubuntu0.9USN-5204-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.40%probability of exploitation in 30 days
82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Third-Party Advisory1
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CVE-2021-45115 severity badge

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.