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CVE-2023-43665

HIGHCVSS 7.5/10EPSS 1.24%

Last modified

CVE-2023-43665 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
1.24%

65.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
DjangoprojectDjango>= 3.2, < 3.2.22
DjangoprojectDjango>= 4.1, < 4.1.12
DjangoprojectDjango>= 4.2, < 4.2.6
FedoraprojectFedora39

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-43665?
In Django 3.2 before 3.2.22, 4.1 before 4.1.12, and 4.2 before 4.2.6, the django.utils.text.Truncator chars() and words() methods (when used with html=True) are subject to a potential DoS (denial of service) attack via certain inputs with very long, potentially malformed HTML text. The chars() and words() methods are used to implement the truncatechars_html and truncatewords_html template filters, which are thus also vulnerable. NOTE: this issue exists because of an incomplete fix for CVE-2019-14232.
How severe is CVE-2023-43665?
CVE-2023-43665 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.
How do I fix CVE-2023-43665?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST