Security Advisory: USN-7501-2 Exploit Puts Django Applications at Risk
A newly discovered vulnerability (CVE-2025-32873) in Django, the high-level Python web framework, could allow remote attackers to crash applications by sending maliciously crafted network traffic.
This critical flaw affects Ubuntu 18.04 LTS systems running Django, potentially leading to denial-of-service (DoS) conditions and severe performance degradation.
Understanding the Django DoS Vulnerability
What’s the Risk?
Security researcher Elias Myllymäki identified that Django improperly handles large sequences of incomplete HTML tags, allowing attackers to exploit resource consumption and crash vulnerable servers.
Key Impacts:
✔ Service Disruption – Attackers can overwhelm Django applications, causing downtime.
✔ Resource Exhaustion – Excessive CPU/memory usage degrades performance.
✔ Security Exposure – Unpatched systems remain vulnerable to exploitation.
Affected Software & Systems
Ubuntu 18.04 LTS (Bionic Beaver)
python-django (v1.11.11)
python3-django (v1.11.11)
How to Fix the Django Vulnerability (Patch Instructions)
Immediate Update Required
To mitigate this security risk, administrators must apply the latest patches:
For Ubuntu 18.04 LTS:
python-django:
1:1.11.11-1ubuntu1.21+esm11(Available via Ubuntu Pro)python3-django:
1:1.11.11-1ubuntu1.21+esm11(Available via Ubuntu Pro)
Update Command:
sudo apt update && sudo apt upgrade python-django python3-djangoWhy Upgrade to Ubuntu Pro?
Extended Security Maintenance (ESM) ensures continued protection for Ubuntu 18.04 LTS beyond its standard support window, making it essential for enterprise deployments.
Additional Security Recommendations
✔ Monitor Network Traffic – Detect abnormal requests targeting Django.
✔ Implement Rate Limiting – Prevent brute-force DoS attempts.
✔ Use a Web Application Firewall (WAF) – Filter malicious payloads.
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