CVE-2024-3462
📋 TL;DR
Ant Media Server Community Edition's default configuration has improper HTTP header-based authorization, allowing unauthorized users to access non-administrative API calls reserved for authorized users. This affects all versions up to 2.9.0 and potentially newer versions, as no official patch has been released by the vendor.
💻 Affected Systems
- Ant Media Server Community Edition
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive streaming data, manipulate media streams, or disrupt service availability by exploiting API endpoints intended for authorized users.
Likely Case
Unauthorized access to non-administrative API functions, potentially allowing viewing or manipulation of media streams without proper authentication.
If Mitigated
With proper network segmentation and access controls, impact would be limited to isolated network segments with minimal data exposure.
🎯 Exploit Status
Exploitation involves manipulating HTTP headers to bypass authorization checks on API endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None confirmed
Vendor Advisory: https://antmedia.io/
Restart Required: No
Instructions:
No official patch available. Monitor vendor announcements for security updates.
🔧 Temporary Workarounds
Implement Reverse Proxy with Header Validation
linuxDeploy a reverse proxy (nginx, Apache) that validates and sanitizes HTTP headers before forwarding to Ant Media Server.
# nginx example: add header validation in location block
proxy_set_header X-Custom-Auth $http_x_custom_auth;
# Add validation logic in proxy configuration
Network Segmentation and Access Control
linuxRestrict access to Ant Media Server API endpoints using firewall rules or network segmentation.
# Example iptables rule to restrict API access
iptables -A INPUT -p tcp --dport 5080 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 5080 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit API endpoint exposure to trusted networks only.
- Deploy a Web Application Firewall (WAF) with rules to detect and block unauthorized header manipulation attempts.
🔍 How to Verify
Check if Vulnerable:
Test API endpoints with manipulated HTTP headers to see if unauthorized access is possible. Use tools like curl to send requests with various header combinations.Check Version:
Check Ant Media Server version via web interface or configuration files. Default location: /usr/local/antmedia/version.txtVerify Fix Applied:
After implementing workarounds, retest API endpoints with unauthorized header manipulations to confirm access is blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual API access patterns from unauthorized IPs
- Failed authentication attempts followed by successful API calls with modified headers
Network Indicators:
- HTTP requests to API endpoints with manipulated authorization headers
- Traffic to non-standard ports from untrusted sources
SIEM Query:
source="antmedia.log" AND ("API" OR "/rest/") AND status=200 AND NOT (user=authenticated_user OR ip=trusted_ip)