CVE-2023-46808
📋 TL;DR
This vulnerability allows authenticated remote attackers to write arbitrary files to Ivanti ITSM servers. Successful exploitation could lead to remote code execution as a non-root user. Organizations using Ivanti Neurons for ITSM versions before 2023.4 are affected.
💻 Affected Systems
- Ivanti Neurons for ITSM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, data exfiltration, lateral movement within the network, and persistence establishment.
Likely Case
Unauthorized file writes leading to web shell deployment, privilege escalation, and limited command execution within the application context.
If Mitigated
File writes limited to non-critical directories with proper file permissions and monitoring preventing successful exploitation.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once credentials are obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2023.4 or later
Vendor Advisory: https://forums.ivanti.com/s/article/SA-CVE-2023-46808-Authenticated-Remote-File-Write-for-Ivanti-Neurons-for-ITSM
Restart Required: Yes
Instructions:
1. Download Ivanti ITSM version 2023.4 or later from the Ivanti portal. 2. Backup current configuration and data. 3. Apply the update following Ivanti's upgrade documentation. 4. Restart the ITSM services.
🔧 Temporary Workarounds
Restrict File Upload Locations
allConfigure application to only allow file uploads to specific, non-executable directories with strict permissions.
Implement WAF Rules
allDeploy web application firewall rules to block suspicious file upload patterns and path traversal attempts.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Ivanti ITSM servers from critical systems.
- Enforce multi-factor authentication and strong password policies for all ITSM user accounts.
🔍 How to Verify
Check if Vulnerable:
Check the Ivanti ITSM version in the administration console or via the web interface. Versions below 2023.4 are vulnerable.Check Version:
Check via web interface: https://[server]/api/version or in admin console under System Information.Verify Fix Applied:
Verify the version shows 2023.4 or higher in the administration console and test file upload functionality with malicious patterns.📡 Detection & Monitoring
Log Indicators:
- Unusual file write operations in application logs
- Multiple failed authentication attempts followed by successful login and file upload
- Suspicious file extensions being uploaded
Network Indicators:
- Unusual outbound connections from ITSM server
- HTTP POST requests with file upload parameters to unexpected endpoints
SIEM Query:
source="ivanti_itsm" AND (event_type="file_upload" AND file_extension IN ("php", "jsp", "asp", "aspx", "war")) OR (event_type="authentication" AND result="success" AND source_ip NOT IN (trusted_ips))