CVE-2020-7328
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code or gain control of resources in McAfee MVISION Endpoint through an external entity attack in the ePO extension. Attackers can exploit improper input validation of HTTP requests when malicious content has been loaded into ePO by an administrator. Organizations using affected versions of MVISION Endpoint are at risk.
💻 Affected Systems
- McAfee MVISION Endpoint
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution leading to data theft, lateral movement, and persistent backdoor installation.
Likely Case
Unauthorized access to sensitive data, privilege escalation, and potential ransomware deployment within the affected environment.
If Mitigated
Limited impact with proper network segmentation, ePO administrator training, and input validation controls in place.
🎯 Exploit Status
Requires administrator interaction to load malicious content into ePO before remote exploitation can occur.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.11 and later
Vendor Advisory: https://kc.mcafee.com/corporate/index?page=content&id=SB10334
Restart Required: Yes
Instructions:
1. Download MVISION Endpoint version 20.11 or later from McAfee support portal. 2. Deploy the update through ePO console. 3. Restart affected endpoints to complete installation.
🔧 Temporary Workarounds
Disable ePO extension
allTemporarily disable the vulnerable ePO extension component
Use ePO console to disable the MVISION Endpoint extension
Restrict ePO administrator access
allLimit which administrators can load content into ePO
Configure ePO role-based access controls
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all HTTP requests to ePO
- Segment network to isolate ePO servers and restrict access to trusted IPs only
🔍 How to Verify
Check if Vulnerable:
Check MVISION Endpoint version in ePO console or run 'Get-MVISIONEndpointVersion' on Windows endpointsCheck Version:
On Windows: Get-MVISIONEndpointVersion | Select-Object VersionVerify Fix Applied:
Confirm version is 20.11 or higher in ePO console and verify no XXE-related errors in ePO logs📡 Detection & Monitoring
Log Indicators:
- Unusual XML parsing errors in ePO logs
- Suspicious HTTP requests containing XML external entities
- Unexpected process execution from ePO service
Network Indicators:
- HTTP requests with XML payloads to ePO servers from unexpected sources
- Outbound connections from ePO servers to external domains
SIEM Query:
source="ePO_logs" AND ("XXE" OR "external entity" OR "DOCTYPE")