CVE-2024-53688
📋 TL;DR
This CVE describes an OS command injection vulnerability in AE1021 and AE1021PE firmware that allows authenticated users to execute arbitrary operating system commands via crafted HTTP requests. The vulnerability affects firmware versions 2.0.10 and earlier of these devices. Attackers with valid login credentials can potentially gain full system control.
💻 Affected Systems
- AE1021
- AE1021PE
⚠️ 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 compromise of the device allowing installation of persistent backdoors, lateral movement to other network systems, data exfiltration, and use as a botnet node.
Likely Case
Unauthorized command execution leading to configuration changes, service disruption, credential theft, and potential privilege escalation to root access.
If Mitigated
Limited impact if proper network segmentation, strong authentication, and monitoring are in place, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires authenticated access but command injection vulnerabilities are typically straightforward to exploit once the injection point is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2.0.10
Vendor Advisory: https://www.fxc.jp/news/20241213
Restart Required: Yes
Instructions:
1. Check current firmware version using device web interface or CLI. 2. Download updated firmware from vendor website. 3. Upload firmware through device administration interface. 4. Apply update and restart device as prompted.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected devices in separate network segments with strict firewall rules to limit attack surface.
Authentication Hardening
allImplement strong password policies, multi-factor authentication if supported, and disable default credentials.
🧯 If You Can't Patch
- Implement strict network access controls to limit which users/systems can communicate with the device management interface.
- Enable detailed logging and monitoring for suspicious HTTP requests containing command injection patterns.
🔍 How to Verify
Check if Vulnerable:
Check firmware version in device web interface under System > Firmware or via SSH/Telnet using 'show version' command.Check Version:
show version (via CLI) or check System Information in web interfaceVerify Fix Applied:
Verify firmware version is greater than 2.0.10 and test HTTP endpoints that previously accepted user input for command execution.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests with shell metacharacters (;, |, &, $, `)
- Multiple failed authentication attempts followed by successful login and command execution patterns
- Unexpected process execution or system command logs
Network Indicators:
- HTTP requests containing command injection payloads to device management endpoints
- Unusual outbound connections from device to external IPs
SIEM Query:
source="device_logs" AND (http_request CONTAINS ";" OR http_request CONTAINS "|" OR http_request CONTAINS "$" OR http_request CONTAINS "`")