CVE-2020-12614
📋 TL;DR
This vulnerability in BeyondTrust Privilege Management for Windows allows attackers to bypass certificate validation when publisher criteria is selected for Add Admin tokens. A standard user can exploit this to elevate privileges to administrator level. Organizations using affected versions of BeyondTrust Privilege Management for Windows are at risk.
💻 Affected Systems
- BeyondTrust Privilege Management for Windows
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise where any standard user can gain administrator privileges, potentially leading to full domain takeover, data exfiltration, or ransomware deployment.
Likely Case
Privilege escalation within Windows environments allowing attackers to bypass security controls, install malware, or access restricted resources.
If Mitigated
Limited impact with proper certificate validation and least privilege principles in place, though the vulnerability still presents a security gap.
🎯 Exploit Status
Exploitation requires standard user access and knowledge of the vulnerable configuration. The vulnerability is well-documented in security advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.6 SR1 and later versions
Vendor Advisory: https://www.beyondtrust.com/trust-center/security-advisories/bt22-10
Restart Required: Yes
Instructions:
1. Download BeyondTrust Privilege Management for Windows 5.6 SR1 or later from BeyondTrust support portal. 2. Backup current configuration. 3. Install the update following vendor instructions. 4. Restart affected systems. 5. Verify the update was successful.
🔧 Temporary Workarounds
Disable Publisher Criteria for Add Admin Tokens
windowsTemporarily remove publisher criteria requirement for Add Admin tokens until patching can be completed.
Use BeyondTrust Privilege Management console to modify token policies and remove publisher criteria from Add Admin tokens
Implement Additional Certificate Validation
windowsAdd supplemental certificate validation checks through group policy or other security controls.
🧯 If You Can't Patch
- Implement strict least privilege principles and monitor for privilege escalation attempts
- Deploy additional endpoint detection and response (EDR) solutions to detect abnormal privilege elevation
🔍 How to Verify
Check if Vulnerable:
Check BeyondTrust Privilege Management version and verify if publisher criteria is configured for Add Admin tokens. Review security advisory BT22-10 for specific indicators.Check Version:
Check BeyondTrust Privilege Management console or use PowerShell: Get-WmiObject -Class Win32_Product | Where-Object {$_.Name -like '*BeyondTrust*'} | Select-Object Name, VersionVerify Fix Applied:
Verify installation of version 5.6 SR1 or later through BeyondTrust console and confirm publisher criteria validation is functioning correctly.📡 Detection & Monitoring
Log Indicators:
- Unexpected privilege elevation events in Windows Security logs
- BeyondTrust audit logs showing Add Admin token usage with publisher criteria
- Event ID 4688 with privilege changes
Network Indicators:
- Unusual authentication patterns from standard user accounts
- Lateral movement attempts following privilege escalation
SIEM Query:
source="windows_security" event_id=4688 AND (privileges="SeDebugPrivilege" OR privileges="SeTcbPrivilege") AND user="standard_user_account"🔗 References
- https://www.beyondtrust.com/support/changelog/privilege-management-for-windows-5-6-sr1
- https://www.beyondtrust.com/trust-center/security-advisories/bt22-10
- https://www.beyondtrust.com/support/changelog/privilege-management-for-windows-5-6-sr1
- https://www.beyondtrust.com/trust-center/security-advisories/bt22-10
