#VU103000 Input validation error in Django - CVE-2024-56374

Vulnerability identifier: #VU103000

Vulnerability risk: Medium

CVSSv4.0: 6.6 [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/E:U/U:Green]

CVE-ID: CVE-2024-56374

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Django
Web applications / CMS

Vendor: Django Software Foundation

Description

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

The vulnerability exists due lack of upper-bound limit enforcement in strings passed when performing IPv6 validation in clean_ipv6_address() and is_valid_ipv6_address() functions. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Django: 4.2.0 - 4.2.17, 5.0.1 - 5.1.4

---

External links
https://www.openwall.com/lists/oss-security/2025/01/14/2
https://www.djangoproject.com/weblog/2025/jan/14/security-releases/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.