CVE-2022-27677
📋 TL;DR
This vulnerability allows low-privileged users to modify files during AMD Ryzen Master installation, potentially leading to privilege escalation and arbitrary code execution. It affects systems running vulnerable versions of AMD Ryzen Master software.
💻 Affected Systems
- AMD Ryzen Master
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker with low privileges gains full SYSTEM/root access and can install malware, steal credentials, or compromise the entire system.
Likely Case
Local privilege escalation allowing attackers to bypass security controls and execute arbitrary code with elevated privileges.
If Mitigated
No impact if proper access controls prevent low-privileged users from running installation processes or if the system is patched.
🎯 Exploit Status
Requires local access and low-privileged user account. Exploitation involves manipulating installation processes.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version with fix from AMD advisory
Vendor Advisory: https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-1052
Restart Required: Yes
Instructions:
1. Visit AMD Ryzen Master download page. 2. Download and install the latest version. 3. Restart the system. 4. Verify installation completed successfully.
🔧 Temporary Workarounds
Restrict installation permissions
windowsPrevent low-privileged users from running installation processes or modifying AMD Ryzen Master directories.
icacls "C:\Program Files\AMD\RyzenMaster" /deny Users:(OI)(CI)F
Remove vulnerable software
windowsUninstall AMD Ryzen Master if not required for system operation.
appwiz.cpl
Select AMD Ryzen Master and click Uninstall
🧯 If You Can't Patch
- Implement strict access controls to prevent low-privileged users from running installation processes
- Monitor for unauthorized file modifications in AMD Ryzen Master directories
🔍 How to Verify
Check if Vulnerable:
Check AMD Ryzen Master version against patched version in AMD advisory. Also check if low-privileged users have write access to installation directories.Check Version:
Check AMD Ryzen Master application interface or Control Panel > Programs and FeaturesVerify Fix Applied:
Verify AMD Ryzen Master version is updated to patched version and test privilege escalation attempts fail.📡 Detection & Monitoring
Log Indicators:
- Failed or unusual installation attempts by low-privileged users
- File modification events in AMD Ryzen Master directories
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
EventID=4688 AND ProcessName LIKE '%RyzenMaster%' AND SubjectUserName NOT IN (Administrator, SYSTEM)