CVE-2022-33312
📋 TL;DR
This CVE describes command injection vulnerabilities in Robustel R1510 routers that allow remote attackers to execute arbitrary commands via specially crafted requests to the web server API. The vulnerability affects the /action/import_cert_file/ endpoint and can lead to complete system compromise. Organizations using Robustel R1510 routers in vulnerable configurations are affected.
💻 Affected Systems
- Robustel R1510
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with root-level access, allowing attackers to install persistent backdoors, pivot to internal networks, exfiltrate sensitive data, or use the device as part of a botnet.
Likely Case
Remote code execution leading to device compromise, credential theft, network reconnaissance, and potential lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation, API authentication, and input validation are implemented, though the vulnerability remains present.
🎯 Exploit Status
The Talos Intelligence report provides technical details that could be used to create exploits. The vulnerability requires network access to the web interface but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check with Robustel for updated firmware
Vendor Advisory: https://talosintelligence.com/vulnerability_reports/TALOS-2022-1572
Restart Required: Yes
Instructions:
1. Contact Robustel for updated firmware. 2. Backup current configuration. 3. Upload and install the patched firmware. 4. Reboot the device. 5. Restore configuration if needed.
🔧 Temporary Workarounds
Disable web management interface
allDisable the web server or restrict access to management interfaces
Check device documentation for disabling web interface commands
Network access controls
linuxRestrict network access to the device using firewall rules
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices
- Deploy web application firewall (WAF) rules to block suspicious API requests
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or CLI. If version is 3.3.0, the device is vulnerable.Check Version:
Check via web interface or use device-specific CLI commands (consult device documentation)Verify Fix Applied:
Verify firmware version has been updated to a version after 3.3.0 and test API endpoints for command injection.📡 Detection & Monitoring
Log Indicators:
- Unusual API requests to /action/import_cert_file/
- Suspicious command execution in system logs
- Multiple failed authentication attempts followed by API access
Network Indicators:
- Unusual outbound connections from the router
- Traffic to /action/import_cert_file/ endpoint with command-like parameters
- Unexpected SSH or telnet connections originating from the device
SIEM Query:
source="router_logs" AND (uri="/action/import_cert_file/" OR command="*;*" OR command="*|*" OR command="*`*" OR command="*$(*)")