CVE-2020-7332
📋 TL;DR
This CVE describes a Cross-Site Request Forgery (CSRF) vulnerability in McAfee Endpoint Security's ePO extension that allows attackers to execute arbitrary HTML code. It affects organizations using McAfee ENS before the November 2020 update. Attackers can trick authenticated users into performing unintended actions in the firewall management interface.
💻 Affected Systems
- McAfee Endpoint Security (ENS)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could modify firewall rules, disable security controls, or execute administrative actions leading to network compromise and data exfiltration.
Likely Case
Attackers could disable specific firewall rules, create exceptions for malicious traffic, or redirect users to phishing sites.
If Mitigated
With proper CSRF protections and network segmentation, impact is limited to the specific management interface with no lateral movement.
🎯 Exploit Status
Exploitation requires the victim to be authenticated to the ePO interface and visit a malicious webpage. No authentication bypass is needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ENS 10.7.0 November 2020 Update
Vendor Advisory: https://kc.mcafee.com/corporate/index?page=content&id=SB10335
Restart Required: Yes
Instructions:
1. Download the November 2020 update from McAfee's official portal. 2. Deploy the update through ePO console or manually install. 3. Restart affected endpoints to apply changes. 4. Verify update completion in ePO dashboard.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to ePO web interface requests
Requires custom web application firewall rules or application modifications
Network Segmentation
allRestrict access to ePO management interface to trusted networks only
firewall-cmd --permanent --zone=trusted --add-source=192.168.1.0/24
netsh advfirewall firewall add rule name="Restrict ePO" dir=in action=allow remoteip=192.168.1.0/24 localport=8443 protocol=TCP
🧯 If You Can't Patch
- Implement strict SameSite cookie policies and Content Security Policy headers
- Educate users about phishing risks and require MFA for ePO access
🔍 How to Verify
Check if Vulnerable:
Check ENS version in ePO console: Threat Prevention > Endpoints > select endpoint > Product Details tabCheck Version:
On Windows: reg query "HKLM\SOFTWARE\McAfee\Endpoint\Security\Threat Prevention" /v ProductVersionVerify Fix Applied:
Verify ENS version is 10.7.0.xxxx or later with November 2020 update date📡 Detection & Monitoring
Log Indicators:
- Unexpected firewall rule changes in ePO logs
- Multiple failed authentication attempts followed by rule modifications
Network Indicators:
- Unusual outbound connections after ePO interface access
- Traffic to known malicious domains from management systems
SIEM Query:
source="ePO_logs" AND (event_type="firewall_rule_change" OR event_type="configuration_modification") AND user_agent CONTAINS suspicious_pattern