CVE-2024-3123
📋 TL;DR
This vulnerability in CHANGING Mobile One Time Password allows remote attackers with administrator privileges to upload malicious files through a hidden page due to improper file type filtering. Successful exploitation enables execution of arbitrary system commands, potentially leading to full system compromise. Only administrators can exploit this vulnerability, but it poses significant risk if administrator credentials are compromised.
💻 Affected Systems
- CHANGING Mobile One Time Password
⚠️ 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
Full system compromise with complete administrative control, data exfiltration, ransomware deployment, and persistent backdoor installation.
Likely Case
Unauthorized file upload leading to command execution, privilege escalation, and lateral movement within the network.
If Mitigated
Limited impact with proper access controls, file upload restrictions, and network segmentation in place.
🎯 Exploit Status
Exploitation requires administrator credentials but is straightforward once access is obtained. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.twcert.org.tw/en/cp-139-7914-33fbb-2.html
Restart Required: Yes
Instructions:
1. Contact CHANGING vendor for security patch. 2. Apply vendor-provided patch. 3. Restart affected services. 4. Verify patch implementation.
🔧 Temporary Workarounds
Disable Hidden Upload Page
allRemove or disable the hidden file upload page functionality
Specific commands depend on system configuration - consult vendor documentation
Implement File Upload Restrictions
linuxConfigure web server to block file uploads to the vulnerable endpoint
# Example for Apache:
<Location /hidden-upload-page>
Deny from all
</Location>
# Example for Nginx:
location /hidden-upload-page {
deny all;
}
🧯 If You Can't Patch
- Implement strict access controls for administrator accounts with multi-factor authentication
- Deploy web application firewall (WAF) with file upload filtering rules
🔍 How to Verify
Check if Vulnerable:
Check if hidden upload page exists and accepts file uploads without proper validation. Test with authorized administrator account.Check Version:
Check application version through admin interface or consult vendor documentationVerify Fix Applied:
Attempt to upload malicious file types after patch application - should be rejected. Verify hidden page functionality is removed or properly secured.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to hidden endpoints
- Administrator account accessing hidden upload functionality
- Execution of unexpected system commands
Network Indicators:
- HTTP POST requests to hidden upload endpoints
- Unusual outbound connections following file uploads
SIEM Query:
source="web_server" AND (uri="*hidden*" OR uri="*upload*") AND method="POST" AND response_code=200