CVE-2022-23763
📋 TL;DR
This vulnerability in NeoRS's ActiveX module allows attackers to bypass origin validation and trick users into downloading and executing arbitrary malicious files. Attackers can exploit this by luring victims to specially crafted web pages, potentially leading to system compromise. Users of affected NeoRS software with the vulnerable ActiveX component are at risk.
💻 Affected Systems
- NeoRS software with vulnerable ActiveX module
📦 What is this software?
Neors by Douzone
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover through remote code execution, data theft, ransomware deployment, and persistent backdoor installation.
Likely Case
Malware infection leading to credential theft, data exfiltration, or system disruption through user interaction with malicious web content.
If Mitigated
Limited impact with proper web filtering, endpoint protection, and user awareness preventing successful exploitation.
🎯 Exploit Status
Exploitation requires user interaction but is technically simple once the victim visits a malicious page
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=66788
Restart Required: Yes
Instructions:
1. Contact NeoRS vendor for patch details. 2. Apply available security updates. 3. Restart affected systems. 4. Verify ActiveX module is updated.
🔧 Temporary Workarounds
Disable ActiveX in Internet Explorer
windowsPrevents the vulnerable ActiveX control from executing
Navigate to Internet Options > Security > Custom Level > ActiveX controls and plug-ins > Set to Disable
Use alternative browsers
windowsSwitch to browsers that don't support ActiveX (Chrome, Firefox, Edge)
🧯 If You Can't Patch
- Implement strict web filtering to block malicious sites
- Deploy application whitelisting to prevent unauthorized executables
🔍 How to Verify
Check if Vulnerable:
Check if NeoRS ActiveX module is installed and enabled in Internet ExplorerCheck Version:
Check ActiveX control properties in Internet Explorer or Windows RegistryVerify Fix Applied:
Verify ActiveX module version matches patched version from vendor📡 Detection & Monitoring
Log Indicators:
- Unexpected file downloads via ActiveX
- Suspicious process execution from temporary directories
Network Indicators:
- HTTP requests to unusual domains followed by file downloads
- Outbound connections from newly spawned processes
SIEM Query:
Process creation where parent process is iexplore.exe and command line contains download/execute patterns