CVE-2020-7825
📋 TL;DR
This vulnerability allows remote command execution on MiPlatform systems by exploiting improper input validation in the ExtCommandApi.dll module. Attackers can execute arbitrary operating system commands by sending malicious parameters to the WinExec function. Systems running MiPlatform 2019.05.16 and earlier are affected.
💻 Affected Systems
- MiPlatform
📦 What is this software?
Miplatform by Tobesoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the affected server, allowing data theft, ransomware deployment, or use as a pivot point for lateral movement.
Likely Case
Remote code execution leading to data exfiltration, installation of backdoors, or disruption of MiPlatform services.
If Mitigated
Limited impact if proper network segmentation, least privilege, and input validation are implemented, potentially containing the attack to the application server.
🎯 Exploit Status
The vulnerability is in a publicly accessible API function with no authentication required, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2019.05.16 or later (specifically patched version)
Vendor Advisory: https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=35509
Restart Required: Yes
Instructions:
1. Download the latest MiPlatform update from the vendor
2. Stop all MiPlatform services
3. Apply the patch/update
4. Restart MiPlatform services
5. Verify the update was successful
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to MiPlatform services to only trusted IP addresses or internal networks.
Use firewall rules to block external access to MiPlatform ports (typically 80/443 and application-specific ports)
Input Validation Enhancement
allImplement additional input validation at the web application firewall or reverse proxy level to block malicious parameters.
Configure WAF rules to block requests containing suspicious command execution patterns in parameters
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MiPlatform servers from critical systems
- Apply the principle of least privilege to MiPlatform service accounts and disable unnecessary functionality
🔍 How to Verify
Check if Vulnerable:
Check MiPlatform version against affected versions (2019.05.16 and earlier). Review system logs for suspicious WinExec calls or unexpected command execution.Check Version:
Check MiPlatform version through the application interface or by examining installed program version in Windows Programs and FeaturesVerify Fix Applied:
Verify MiPlatform version is updated to 2019.05.16 or later patched version. Test the vulnerable API endpoint with safe test parameters to ensure proper input validation.📡 Detection & Monitoring
Log Indicators:
- Unusual WinExec function calls in application logs
- Suspicious command execution events in Windows Event Logs
- Unexpected process creation from MiPlatform services
Network Indicators:
- Unusual outbound connections from MiPlatform servers
- Traffic patterns indicating command and control communication
- Exploit-specific payloads in HTTP requests to MiPlatform
SIEM Query:
source="MiPlatform" AND (event="WinExec" OR command="cmd.exe" OR command="powershell.exe")