CVE-2024-35314
📋 TL;DR
This critical vulnerability in Mitel MiCollab Desktop Client and MiVoice Business SVI allows unauthenticated attackers to execute arbitrary commands through command injection. Attackers can exploit insufficient parameter sanitization when users interact with malicious content. Organizations using MiCollab through version 9.7.1.110 or MiVB SVI 1.0.0.25 are affected.
💻 Affected Systems
- Mitel MiCollab Desktop Client
- Mitel MiVoice Business Solution Virtual Instance (MiVB SVI)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over affected systems, potentially leading to data theft, ransomware deployment, or lateral movement across the network.
Likely Case
Attackers execute malicious scripts to steal credentials, install backdoors, or deploy malware on user workstations, requiring user interaction with crafted content.
If Mitigated
Limited impact with proper network segmentation, endpoint protection, and user awareness preventing successful exploitation.
🎯 Exploit Status
Attack requires user interaction but no authentication. CVSS 9.8 indicates critical severity with high attack vector and low attack complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: MiCollab 9.7.1.111 or later, MiVB SVI updates per vendor advisory
Vendor Advisory: https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-24-0015
Restart Required: Yes
Instructions:
1. Download latest patches from Mitel support portal. 2. Apply patches to all affected systems. 3. Restart services and verify installation. 4. Test functionality before production deployment.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Mitel systems from internet and restrict internal access to necessary users only.
User Awareness Training
allTrain users to avoid interacting with suspicious content in Mitel applications.
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure of Mitel systems
- Deploy endpoint detection and response (EDR) solutions to monitor for suspicious command execution
🔍 How to Verify
Check if Vulnerable:
Check MiCollab version in application settings or About dialog. For MiVB SVI, check version in administration console.Check Version:
MiCollab: Check Help > About. MiVB SVI: Use admin console or command line tools specific to deployment.Verify Fix Applied:
Verify installed version is MiCollab 9.7.1.111+ or updated MiVB SVI version per vendor guidance.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution from Mitel processes
- Suspicious script execution in application logs
- Failed authentication attempts followed by command execution
Network Indicators:
- Unexpected outbound connections from Mitel systems
- Command and control traffic from Mitel workstations
SIEM Query:
process_name:"MiCollab.exe" AND (cmdline:*powershell* OR cmdline:*cmd.exe* OR cmdline:*wscript*)