CVE-2023-4589
📋 TL;DR
This vulnerability allows attackers with administrator access to Delinea Secret Server to install malicious software updates due to insufficient integrity verification. The update process lacks digital signatures and fails to validate update packages, enabling code injection. Organizations using Delinea Secret Server v10.9.000002 are affected.
💻 Affected Systems
- Delinea Secret Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Secret Server instance, allowing attackers to steal all stored secrets, deploy persistent backdoors, and pivot to connected systems.
Likely Case
Administrator-level attackers could install malicious updates to exfiltrate credentials, modify configurations, or disrupt operations.
If Mitigated
With proper access controls and monitoring, impact is limited to authorized administrators who would be detected performing unauthorized updates.
🎯 Exploit Status
Exploitation requires administrator credentials but is straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v10.9.000003 or later
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-delinea-secret-server
Restart Required: Yes
Instructions:
1. Backup Secret Server configuration and database. 2. Download the latest version from Delinea's official portal. 3. Run the installer with administrative privileges. 4. Restart the Secret Server service. 5. Verify the update completed successfully.
🔧 Temporary Workarounds
Restrict Administrator Access
allLimit the number of administrator accounts and implement multi-factor authentication for all admin users.
Monitor Update Activities
allImplement logging and alerting for all software update attempts on the Secret Server.
🧯 If You Can't Patch
- Implement strict access controls and monitoring for all administrator accounts.
- Isolate the Secret Server from internet access and restrict internal network connectivity.
🔍 How to Verify
Check if Vulnerable:
Check the Secret Server version in the web interface under Help > About. If version is exactly v10.9.000002, the system is vulnerable.Check Version:
Not applicable - check via web interface or application logs.Verify Fix Applied:
After updating, verify the version shows v10.9.000003 or later in the About section.📡 Detection & Monitoring
Log Indicators:
- Unauthorized update attempts
- Update processes initiated by unexpected users
- Failed integrity checks during updates
Network Indicators:
- Unusual outbound connections after updates
- Downloads from non-Delinea sources
SIEM Query:
source="secret_server" AND (event="update_initiated" OR event="package_install")