Resource exhaustion in Django - CVE-2023-46695

Vulnerability identifier: #VU82638

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-46695

CWE-ID: CWE-400

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources during NFKC normalization. A remote attacker can pass a very large number of Unicode characters to "django.contrib.auth.forms.UsernameField" and perform a denial of service (DoS) attack.

The vulnerability affects Windows installations only.

Django
openEuler
Anolis OS
python-django
python-django-help
python3-Django
python3-django
python3-django-bash-completion
python3-django-doc
Cloud Pak for Network Automation

Install updates from vendor's website.

Django - addressed in versions 3.2.23, 4.1.13, 4.2.7
python-django - update to 2.2.27-9
python-django-help - update to 2.2.27-9
python3-Django - update to 2.2.27-9
Cloud Pak for Network Automation - update to 2.6.5
python3-django - update to 4.2.7-1
python3-django-bash-completion - update to 4.2.7-1
python3-django-doc - update to 4.2.7-1

• https://www.djangoproject.com/weblog/2023/nov/01/security-releases/

• Denial of service in Django on Windows
• Multiple vulnerabilities in IBM Cloud Pak for Network Automation
• openEuler update for python-django
• Anolis OS update for python-django