CVE-2024-45414
📋 TL;DR
This critical vulnerability in ZTE routers allows unauthenticated remote attackers to execute arbitrary code as root via a stack-based buffer overflow in the HTTPD service. Attackers can exploit this by sending specially crafted base64-encoded RSA ciphertext to the webPrivateDecrypt function. All users of affected ZTE router models with vulnerable firmware versions are at risk.
💻 Affected Systems
- ZTE routers (multiple models)
⚠️ 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
Complete system compromise with root-level remote code execution, allowing attackers to install persistent malware, pivot to internal networks, or use devices as botnet nodes.
Likely Case
Remote code execution leading to device takeover, credential theft, network traffic interception, and potential lateral movement within the network.
If Mitigated
Limited impact if devices are behind firewalls with strict inbound filtering, though internal attackers could still exploit the vulnerability.
🎯 Exploit Status
The vulnerability requires sending crafted base64-encoded data to trigger buffer overflow. No authentication needed, making exploitation straightforward for attackers with network access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check ZTE security advisory for specific patched firmware versions
Vendor Advisory: Not provided in references; check ZTE official security portal
Restart Required: Yes
Instructions:
1. Check router model and current firmware version. 2. Visit ZTE support portal for security advisories. 3. Download and apply latest firmware update. 4. Reboot router to activate patched HTTPD service.
🔧 Temporary Workarounds
Block HTTP/HTTPS Access
linuxRestrict network access to router management interface using firewall rules
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disable Remote Management
allTurn off remote administration features in router configuration
🧯 If You Can't Patch
- Segment affected routers in isolated network zones with strict firewall rules
- Implement network-based intrusion detection to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check router firmware version against ZTE's vulnerability list. Test by attempting to access web interface and reviewing service banners.Check Version:
Login to router admin interface and check System Status or Firmware Information pageVerify Fix Applied:
Verify firmware has been updated to patched version and attempt to reproduce exploitation (in controlled environment).📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to webPrivateDecrypt endpoint
- Multiple failed decryption attempts
- Unexpected process crashes in HTTPD service
Network Indicators:
- Unusual base64-encoded payloads in HTTP traffic
- Exploitation attempts targeting router management ports
SIEM Query:
source="router_logs" AND (url="*webPrivateDecrypt*" OR message="*buffer overflow*" OR process="httpd" AND status="crashed")