CVE-2024-9137
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary commands on affected Moxa devices due to missing authentication checks in the Moxa service. Attackers can download/upload configuration files and potentially compromise the entire system. Affected products include Moxa routers, network security appliances, and Ethernet switches.
💻 Affected Systems
- Moxa routers
- Moxa network security appliances
- Moxa Ethernet switches
⚠️ 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 allowing attackers to install persistent backdoors, exfiltrate sensitive data, pivot to internal networks, or render devices inoperable.
Likely Case
Unauthorized access to configuration files, credential theft, network reconnaissance, and potential lateral movement within the network.
If Mitigated
Limited impact if devices are behind firewalls with strict network segmentation and access controls, though the vulnerability remains present.
🎯 Exploit Status
The vulnerability requires no authentication and command execution is straightforward once the service endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Varies by product - see vendor advisories for specific fixed versions
Restart Required: Yes
Instructions:
1. Identify affected devices using vendor advisories. 2. Download appropriate firmware updates from Moxa support portal. 3. Backup current configuration. 4. Apply firmware update following vendor documentation. 5. Verify update was successful and test functionality.
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to Moxa service ports using firewall rules
Service Disablement
allDisable the vulnerable Moxa service if not required for operations
🧯 If You Can't Patch
- Implement strict network segmentation to isolate affected devices from untrusted networks
- Deploy network-based intrusion detection systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against vendor advisories and test if Moxa service responds to unauthenticated commandsCheck Version:
Check via device web interface or CLI using 'show version' or similar vendor-specific commandsVerify Fix Applied:
Verify firmware version matches patched versions in vendor advisories and test that authentication is now required for Moxa service commands📡 Detection & Monitoring
Log Indicators:
- Unauthenticated access attempts to Moxa service
- Unexpected configuration file changes
- Unusual command execution patterns
Network Indicators:
- Traffic to Moxa service ports from unauthorized sources
- Unusual outbound connections from affected devices
SIEM Query:
source_ip IN (untrusted_networks) AND dest_port IN (moxa_service_ports) AND auth_result='failed'🔗 References
- https://www.moxa.com/en/support/product-support/security-advisory/mpsa-241154-missing-authentication-and-os-command-injection-vulnerabilities-in-routers-and-network-security-appliances
- https://www.moxa.com/en/support/product-support/security-advisory/mpsa-241156-cve-2024-9137-missing-authentication-vulnerability-in-ethernet-switches
