CVE-2024-50305
📋 TL;DR
A vulnerability in Apache Traffic Server allows a specially crafted Host header to cause a denial-of-service crash. This affects Apache Traffic Server versions 9.2.0 through 9.2.5 on some platforms, potentially disrupting web proxy and caching services.
💻 Affected Systems
- Apache Traffic Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage of Apache Traffic Server, disrupting all web proxy and caching functionality for dependent applications.
Likely Case
Intermittent service crashes leading to availability issues and potential data loss for in-flight requests.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing rapid detection and restart.
🎯 Exploit Status
Exploitation requires sending a valid Host header, which is trivial for any HTTP client.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.2.6 or 10.0.2
Vendor Advisory: https://lists.apache.org/thread/y15fh6c7kyqvzm0f9odw7c5jh4r4np0y
Restart Required: Yes
Instructions:
1. Download Apache Traffic Server 9.2.6 or 10.0.2 from official sources. 2. Stop the Traffic Server service. 3. Backup configuration files. 4. Install the new version. 5. Restore configurations if needed. 6. Start the service.
🔧 Temporary Workarounds
Host Header Validation
allImplement a reverse proxy or WAF to validate and sanitize Host headers before they reach Traffic Server
Rate Limiting
allImplement rate limiting on HTTP requests to reduce impact of potential DoS attacks
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Traffic Server from untrusted networks
- Deploy monitoring and automated restart scripts to minimize downtime from crashes
🔍 How to Verify
Check if Vulnerable:
Check Traffic Server version with 'traffic_server -v' or 'traffic_manager -v' and verify if between 9.2.0-9.2.5Check Version:
traffic_server -vVerify Fix Applied:
After upgrade, verify version is 9.2.6 or higher with 'traffic_server -v'📡 Detection & Monitoring
Log Indicators:
- Unexpected process termination
- Segmentation fault errors in logs
- Service restart patterns
Network Indicators:
- HTTP requests with unusual Host headers followed by service unavailability
SIEM Query:
source="traffic_server" AND ("segmentation fault" OR "crash" OR "terminated unexpectedly")