Denial-of-Service Vulnerability in Django Web Framework
CVE-2023-23969

7.5HIGH

Key Information:

Vendor

Djangoproject

Status
Django
Vendor
CVE Published:
1 February 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 47%

What is CVE-2023-23969?

Certain versions of the Django web framework, specifically 3.2 before 3.2.17, 4.0 before 4.0.9, and 4.1 before 4.1.6, exhibit a vulnerability due to the caching of parsed Accept-Language headers. This caching mechanism is intended to enhance performance by avoiding repetitive parsing. However, when excessively large raw values are provided within the Accept-Language headers, it can lead to significant memory consumption. Such a scenario poses a risk of Denial-of-Service, as it might exhaust server resources, potentially impacting application availability.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

django-security-advisory-3.2.16
Created by lkq111

References

https://groups.google.com/forum/#%21forum/django-announce
https://docs.djangoproject.com/en/4.1/releases/security/
https://www.djangoproject.com/weblog/2023/feb/01/security...

EPSS Score

47% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.