CVE-2013-6414 — AI Deep Analysis Summary

🚨 **Essence**: A Denial of Service (DoS) vulnerability in Ruby on Rails. 💥 **Consequences**: Attackers can cause memory exhaustion by sending headers with invalid MIME types, crashing the application.

🛠️ **Root Cause**: Flaw in `actionpack/lib/action_view/lookup_context.rb`. 📉 **CWE**: Not specified in data, but relates to improper input validation of MIME types leading to resource exhaustion.

📦 **Affected**: Ruby on Rails 3.x (before 3.2.16) and 4.x (before 4.0.2). 🧩 **Component**: Action View module.

👮 **Privileges**: Remote attackers. 📉 **Impact**: DoS only. No direct data theft or code execution mentioned, just service disruption via memory exhaustion.

⚡ **Threshold**: Low. 🌐 **Auth**: Remote exploitation possible. ⚙️ **Config**: Requires sending malicious HTTP headers with invalid MIME types. No authentication needed.

📜 **Public Exp?**: No specific PoC code listed in data. 🔍 **Status**: Vendor advisories exist (SUSE, RedHat), confirming the flaw is known and actionable.

🔍 **Check**: Scan for Rails versions < 3.2.16 or < 4.0.2. 📡 **Feature**: Look for requests with malformed MIME type headers triggering high memory usage.

✅ **Fixed**: Yes. 📅 **Date**: Dec 3, 2013. 🛡️ **Solution**: Upgrade to Rails 3.2.16 or 4.0.2. Patches available via SUSE and RedHat advisories.

🚧 **Workaround**: If patching is delayed, implement WAF rules to block or sanitize invalid MIME types in request headers. 🛑 **Mitigate**: Monitor for memory spikes.

🔥 **Urgency**: Medium-High. ⚠️ **Priority**: Critical for unpatched systems. DoS attacks are easy to execute and disrupt service immediately.