CVE-2020-13774
📋 TL;DR
This vulnerability allows authenticated attackers to upload malicious ASPX files to Ivanti Endpoint Manager servers, leading to remote code execution. Attackers can gain full control of affected systems. This affects Ivanti Endpoint Manager 2019.1 and 2020.1 installations.
💻 Affected Systems
- Ivanti Endpoint Manager
- Ivanti Unified Endpoint Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full server compromise leading to domain takeover, data exfiltration, and lateral movement across the network.
Likely Case
Attacker gains persistent access to the server, installs backdoors, and steals sensitive endpoint management data.
If Mitigated
Attack is detected and blocked before successful exploitation, or server is isolated to prevent lateral movement.
🎯 Exploit Status
Exploitation is straightforward once authenticated. The vulnerability is in file upload functionality with insufficient validation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2020.2 and later
Vendor Advisory: https://forums.ivanti.com/s/article/Security-Advisory-EPM-2020-2-and-older
Restart Required: Yes
Instructions:
1. Download and install Ivanti Endpoint Manager 2020.2 or later. 2. Apply all security patches. 3. Restart the Ivanti Endpoint Manager service. 4. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Restrict file upload extensions
windowsConfigure web application firewall or server rules to block ASPX file uploads to the vulnerable endpoint.
# Example IIS URL Rewrite rule to block .aspx uploads to EditLaunchPadDialog.aspx
<rule name="Block ASPX Upload" stopProcessing="true">
<match url="EditLaunchPadDialog\.aspx" />
<conditions>
<add input="{QUERY_STRING}" pattern=".*\.aspx" />
</conditions>
<action type="CustomResponse" statusCode="403" statusReason="Forbidden" />
</rule>
Remove vulnerable file
windowsTemporarily remove or rename the vulnerable EditLaunchPadDialog.aspx file.
rename "C:\Program Files\LANDesk\ManagementSuite\wwwroot\EditLaunchPadDialog.aspx" "EditLaunchPadDialog.aspx.bak"
# Or move to backup location
move "C:\Program Files\LANDesk\ManagementSuite\wwwroot\EditLaunchPadDialog.aspx" "C:\backup\"
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Ivanti Endpoint Manager servers from critical systems.
- Enable detailed logging and monitoring for file upload activities to the vulnerable endpoint.
🔍 How to Verify
Check if Vulnerable:
Check if EditLaunchPadDialog.aspx exists in the web directory and test if ASPX files can be uploaded.Check Version:
Check the Ivanti Endpoint Manager console or review the installation directory for version information.Verify Fix Applied:
Verify the Ivanti Endpoint Manager version is 2020.2 or later and test that ASPX file uploads are properly rejected.📡 Detection & Monitoring
Log Indicators:
- ASPX file uploads to EditLaunchPadDialog.aspx
- Unusual file creation in temporary directories
- Failed file validation attempts
Network Indicators:
- HTTP POST requests to EditLaunchPadDialog.aspx with file uploads
- Unusual outbound connections from the Ivanti server
SIEM Query:
source="iis_logs" AND uri="*EditLaunchPadDialog.aspx*" AND (method="POST" OR file_extension=".aspx")