CVE-2017-3897
📋 TL;DR
This vulnerability allows network attackers to execute malicious files on affected systems by exploiting a code injection flaw in McAfee's non-certificate-based authentication mechanism. Attackers can achieve remote code execution via HTTP backend responses. Users of McAfee Live Safe versions before 16.0.3 and McAfee Security Scan Plus versions before 3.11.599.3 are affected.
💻 Affected Systems
- McAfee Live Safe
- McAfee Security Scan Plus
📦 What is this software?
Livesafe by Mcafee
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the victim's computer, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Remote code execution leading to malware installation, credential theft, or system disruption.
If Mitigated
Limited impact with proper network segmentation and endpoint protection, though the vulnerability still presents significant risk.
🎯 Exploit Status
The vulnerability requires network access but no authentication, making it relatively easy to exploit. The high CVSS score suggests weaponization is likely.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: McAfee Live Safe 16.0.3 or later, McAfee Security Scan Plus 3.11.599.3 or later
Vendor Advisory: http://service.mcafee.com/FAQDocument.aspx?lc=1033&id=TS102723
Restart Required: Yes
Instructions:
1. Open McAfee software. 2. Check for updates in the settings/update section. 3. Apply available updates. 4. Restart the computer to complete installation.
🔧 Temporary Workarounds
Disable non-certificate-based authentication
windowsIf possible, configure the software to use certificate-based authentication only.
Network segmentation
allRestrict network access to McAfee management interfaces and backend services.
🧯 If You Can't Patch
- Isolate affected systems from untrusted networks and internet access
- Implement strict network monitoring for suspicious HTTP traffic to McAfee services
🔍 How to Verify
Check if Vulnerable:
Check McAfee software version in the application interface or via Windows Programs and Features.Check Version:
wmic product where "name like '%McAfee%'" get name, versionVerify Fix Applied:
Confirm version is McAfee Live Safe 16.0.3+ or McAfee Security Scan Plus 3.11.599.3+.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests to McAfee backend services
- Unexpected process execution following McAfee service communication
Network Indicators:
- Suspicious HTTP traffic patterns to McAfee service ports
- Unusual outbound connections from McAfee processes
SIEM Query:
source="*mcafee*" AND (http_method=POST OR http_method=GET) AND (url_contains="backend" OR url_contains="auth")