CVE-2024-12908
📋 TL;DR
This vulnerability in Delinea Secret Server's protocol handler allows remote code execution through URI comparison flaws before normalization. Attackers can trick users into visiting malicious pages or opening documents that trigger the vulnerable handler, executing arbitrary code on the victim's machine. Organizations using affected versions of Secret Server are at risk.
💻 Affected Systems
- Delinea Secret Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote attacker gains full control of user's machine through arbitrary code execution, potentially leading to credential theft, lateral movement, and complete system compromise.
Likely Case
Targeted phishing campaigns trick users into clicking malicious links that exploit the protocol handler, leading to malware installation or credential harvesting.
If Mitigated
With proper network segmentation, endpoint protection, and user awareness training, exploitation attempts are detected and blocked before successful compromise.
🎯 Exploit Status
Exploitation requires social engineering but technical complexity is low once user interaction is achieved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Secret Server v11.7.31 with updated protocol handler
Vendor Advisory: https://docs.delinea.com/online-help/secret-server/release-notes/ss-rn-11-7-000049.htm
Restart Required: Yes
Instructions:
1. Download the latest Secret Server update from Delinea's official portal. 2. Apply the patch following Delinea's upgrade documentation. 3. Restart Secret Server services. 4. Verify the protocol handler has been updated to the patched version.
🔧 Temporary Workarounds
Disable protocol handler
windowsTemporarily disable the vulnerable protocol handler to prevent exploitation
Consult Delinea documentation for protocol handler disable procedures
Network filtering
allBlock malicious URI patterns at network perimeter
Configure WAF/IPS to filter suspicious protocol handler calls
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Secret Server from user workstations
- Deploy application whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check Secret Server version and protocol handler version in administration consoleCheck Version:
Check Secret Server web interface → Administration → About for version detailsVerify Fix Applied:
Verify protocol handler version is updated beyond 6.0.3.26 and test URI normalization functionality📡 Detection & Monitoring
Log Indicators:
- Unusual protocol handler activations
- Suspicious URI patterns in web logs
- Unexpected batch file executions
Network Indicators:
- Malformed protocol handler calls
- Suspicious document downloads triggering handlers
SIEM Query:
source="secret_server" AND (event="protocol_handler" OR event="uri_processing") AND uri CONTAINS suspicious_pattern🔗 References
- https://blog.amberwolf.com/blog/2024/december/cve-2024-12908-delinea-protocol-handler---remote-code-execution-via-update-process/
- https://docs.delinea.com/online-help/secret-server/release-notes/ss-rn-11-7-000049.htm
- https://trust.delinea.com/
- https://blog.amberwolf.com/blog/2024/december/cve-2024-12908-delinea-protocol-handler---remote-code-execution-via-update-process/
