// For flags

CVE-2023-43665

python-django: Denial-of-service possibility in django.utils.text.Truncator

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

En Django 3.2 anterior a 3.2.22, 4.1 anterior a 4.1.12 y 4.2 anterior a 4.2.6, los métodos django.utils.text.Truncator chars() y palabras() (cuando se usan con html=True) están sujetos a un potencial Ataque DoS (denegación de servicio) a través de ciertas entradas con texto HTML muy largo y potencialmente mal formado. Los métodos chars() y palabras() se utilizan para implementar los filtros de plantilla truncatechars_html y truncatewords_html, que por tanto también son vulnerables. NOTA: este problema existe debido a una solución incompleta para CVE-2019-14232.

An inefficient regular expression complexity was found in Django. The text truncator regular expressions exhibit linear backtracking complexity, which can be slow, leading to a potential denial of service, given certain HTML inputs.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2023-09-20 CVE Reserved
  • 2023-10-05 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-11-09 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-1284: Improper Validation of Specified Quantity in Input
  • CWE-1333: Inefficient Regular Expression Complexity
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Djangoproject
Search vendor "Djangoproject"
Django
Search vendor "Djangoproject" for product "Django"
>= 3.2 < 3.2.22
Search vendor "Djangoproject" for product "Django" and version " >= 3.2 < 3.2.22"
-
Affected
Djangoproject
Search vendor "Djangoproject"
Django
Search vendor "Djangoproject" for product "Django"
>= 4.1 < 4.1.12
Search vendor "Djangoproject" for product "Django" and version " >= 4.1 < 4.1.12"
-
Affected
Djangoproject
Search vendor "Djangoproject"
Django
Search vendor "Djangoproject" for product "Django"
>= 4.2 < 4.2.6
Search vendor "Djangoproject" for product "Django" and version " >= 4.2 < 4.2.6"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
39
Search vendor "Fedoraproject" for product "Fedora" and version "39"
-
Affected