CVE-2022-23155
📋 TL;DR
Dell Wyse Management Suite versions 2.0 through 3.5.2 contain an unrestricted file upload vulnerability that allows authenticated admin users to upload arbitrary files, potentially leading to remote code execution. This affects organizations using Dell Wyse Management Suite for managing thin clients. The vulnerability requires admin privileges to exploit.
💻 Affected Systems
- Dell Wyse Management Suite
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the Wyse Management Suite server, allowing lateral movement, data theft, and persistent backdoor installation.
Likely Case
Attacker with compromised admin credentials uploads malicious file and executes arbitrary code, potentially disrupting management operations or deploying ransomware.
If Mitigated
With proper access controls and monitoring, impact limited to isolated system compromise that can be quickly detected and contained.
🎯 Exploit Status
Exploitation requires admin credentials but is straightforward once authenticated. The vulnerability is in the file upload functionality.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.6.0 and later
Vendor Advisory: https://www.dell.com/support/kbdoc/000195918
Restart Required: Yes
Instructions:
1. Download Dell Wyse Management Suite version 3.6.0 or later from Dell support site. 2. Backup current configuration. 3. Run the installer to upgrade. 4. Restart the Wyse Management Suite service or server.
🔧 Temporary Workarounds
Restrict Admin Access
allLimit admin privileges to only essential personnel and implement multi-factor authentication for admin accounts.
Network Segmentation
allIsolate Wyse Management Suite server from critical network segments and restrict inbound connections.
🧯 If You Can't Patch
- Implement strict file upload validation and monitoring for suspicious upload activities.
- Deploy application control solutions to prevent execution of unauthorized files on the Wyse Management Suite server.
🔍 How to Verify
Check if Vulnerable:
Check Wyse Management Suite version in the web interface under Help > About or via Windows Programs and Features.Check Version:
Not applicable - check via web interface or Windows control panelVerify Fix Applied:
Verify version is 3.6.0 or later and test file upload functionality with restricted file types.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to Wyse Management Suite, especially executable files or scripts
- Multiple failed login attempts followed by successful admin login and file upload
Network Indicators:
- Unusual outbound connections from Wyse Management Suite server
- File upload requests to Wyse Management Suite with suspicious file extensions
SIEM Query:
source="WyseManagementSuite" AND (event="FileUpload" AND file_extension IN ("exe", "bat", "ps1", "sh"))