CVE-2020-7866
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on systems running vulnerable versions of XPLATFORM's ActiveX component. Attackers can exploit improper input validation to run malicious code with the privileges of the current user. Organizations using XPLATFORM 9.2.2.270 or earlier are affected.
💻 Affected Systems
- XPLATFORM
📦 What is this software?
Xplatform by Tobesoft
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to install malware, steal data, pivot to other systems, or establish persistent backdoors.
Likely Case
Remote code execution leading to data theft, ransomware deployment, or credential harvesting from the compromised system.
If Mitigated
Limited impact through network segmentation, application whitelisting, and proper user privilege restrictions.
🎯 Exploit Status
The vulnerability requires user interaction (visiting a malicious website or opening a malicious document) but no authentication. Exploitation is straightforward once the attack vector is accessed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.2.2.271 or later
Vendor Advisory: http://support.tobesoft.co.kr/Support/index.html
Restart Required: Yes
Instructions:
1. Download the latest XPLATFORM version from the vendor website. 2. Install the update following vendor instructions. 3. Restart affected systems. 4. Verify the update was successful.
🔧 Temporary Workarounds
Disable ActiveX in Internet Explorer
windowsPrevents exploitation by disabling the vulnerable ActiveX component in Internet Explorer settings.
Open Internet Options > Security tab > Custom Level > Set 'Initialize and script ActiveX controls not marked as safe for scripting' to Disable
Block XPLATFORM ActiveX via Group Policy
windowsUse Group Policy to block the vulnerable ActiveX control from running.
Computer Configuration > Administrative Templates > Windows Components > Internet Explorer > Security Features > Add-on Management > Add-on List > Add XPLATFORM ActiveX CLSID with Deny value
🧯 If You Can't Patch
- Implement network segmentation to isolate systems running XPLATFORM from untrusted networks.
- Deploy application control solutions to prevent execution of unauthorized commands and binaries.
🔍 How to Verify
Check if Vulnerable:
Check XPLATFORM version in Control Panel > Programs and Features or via vendor-specific version check utilities.Check Version:
wmic product where name="XPLATFORM" get versionVerify Fix Applied:
Confirm XPLATFORM version is 9.2.2.271 or later and test ActiveX functionality in controlled environment.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation events from Internet Explorer or Office applications
- Command execution logs showing unexpected commands
- Windows Event Logs showing ActiveX loading failures or errors
Network Indicators:
- HTTP requests to unusual domains followed by command execution
- Outbound connections from systems running XPLATFORM to suspicious IPs
SIEM Query:
source="windows_security" AND (event_id=4688 OR event_id=4104) AND process_name IN ("cmd.exe", "powershell.exe", "wscript.exe") AND parent_process IN ("iexplore.exe", "winword.exe", "excel.exe")