CVE-2024-33250

7.2 HIGH

📋 TL;DR

This vulnerability allows remote attackers to execute arbitrary code on affected SRS real-time video servers by sending a specially crafted request. It affects systems running specific versions of the Open-Source Technology Committee SRS software. Attackers can potentially take full control of vulnerable servers.

💻 Affected Systems

Products:
  • Open-Source Technology Committee SRS real-time video server
Versions: RS/4.0.268(Leo) and SRS/4.0.195(Leo)
Operating Systems: Any OS running affected SRS versions
Default Config Vulnerable: ⚠️ Yes
Notes: All deployments of affected versions are vulnerable regardless of configuration.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise allowing attacker to install malware, steal data, pivot to other systems, or use server as part of botnet.

🟠

Likely Case

Remote code execution leading to service disruption, data theft, or cryptocurrency mining malware installation.

🟢

If Mitigated

Limited impact if server is isolated, properly segmented, and monitored with intrusion detection.

🌐 Internet-Facing: HIGH - Remote unauthenticated exploit allows direct attack from internet.
🏢 Internal Only: MEDIUM - Still vulnerable to internal threats but attack surface reduced.

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Public proof-of-concept available in GitHub repository. Exploit appears straightforward based on available information.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: No official vendor advisory found

Restart Required: Yes

Instructions:

1. Check SRS project repository for security updates. 2. Upgrade to patched version when available. 3. Restart SRS service after upgrade.

🔧 Temporary Workarounds

Network Segmentation

linux

Restrict network access to SRS servers using firewall rules

iptables -A INPUT -p tcp --dport [SRS_PORT] -s [TRUSTED_NETWORK] -j ACCEPT
iptables -A INPUT -p tcp --dport [SRS_PORT] -j DROP

Reverse Proxy with Request Filtering

all

Place SRS behind reverse proxy that filters malicious requests

# Configure nginx/apache to proxy requests to SRS with strict request validation

🧯 If You Can't Patch

  • Isolate vulnerable servers in separate network segment with strict firewall rules
  • Implement application-level firewall or WAF to filter malicious requests

🔍 How to Verify

Check if Vulnerable:

Check SRS version using: srs --version or check configuration files for version string

Check Version:

srs --version 2>/dev/null || grep -i version /usr/local/srs/conf/srs.conf

Verify Fix Applied:

Verify upgraded version is not in affected range: RS/4.0.268(Leo) or SRS/4.0.195(Leo)

📡 Detection & Monitoring

Log Indicators:

  • Unusual process execution from SRS service
  • Suspicious network connections from SRS server
  • Error logs showing malformed requests

Network Indicators:

  • Unexpected outbound connections from SRS server
  • Traffic patterns matching known exploit payloads

SIEM Query:

source="srs.log" AND (process_execution OR suspicious_request)

🔗 References

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