CVE-2024-28069
📋 TL;DR
An unauthenticated attacker can exploit an improper configuration in Mitel MiContact Center Business's legacy chat component to access sensitive information and potentially perform unauthorized actions. This affects all systems running MiContact Center Business through version 10.0.0.4. The vulnerability requires no authentication and has a high CVSS score of 7.5.
💻 Affected Systems
- Mitel MiContact Center Business
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the chat component allowing unauthorized access to sensitive customer data, configuration details, and potential lateral movement within the contact center environment.
Likely Case
Information disclosure exposing chat logs, customer PII, agent credentials, or system configuration details that could facilitate further attacks.
If Mitigated
Limited exposure if proper network segmentation and access controls prevent external access to the vulnerable component.
🎯 Exploit Status
The vulnerability is due to improper configuration, suggesting exploitation may be straightforward once the vulnerable endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 10.0.0.5 or later
Vendor Advisory: https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-24-0001
Restart Required: Yes
Instructions:
1. Download the latest version from Mitel support portal. 2. Backup current configuration. 3. Apply the update following Mitel's upgrade documentation. 4. Restart the MiContact Center Business services.
🔧 Temporary Workarounds
Disable Legacy Chat Component
allTemporarily disable the vulnerable legacy chat component if not required for operations.
Consult Mitel documentation for component-specific disable procedures
Network Access Restriction
allRestrict network access to the chat component using firewall rules.
iptables -A INPUT -p tcp --dport [chat_port] -j DROP
netsh advfirewall firewall add rule name="Block MiContact Chat" dir=in action=block protocol=TCP localport=[chat_port]
🧯 If You Can't Patch
- Isolate the MiContact Center Business server from untrusted networks using network segmentation.
- Implement strict access controls and monitor all traffic to the chat component for suspicious activity.
🔍 How to Verify
Check if Vulnerable:
Check the MiContact Center Business version via the admin interface or configuration files. If version is 10.0.0.4 or earlier, the system is vulnerable.Check Version:
Check the admin web interface or consult Mitel documentation for version checking commands specific to your deployment.Verify Fix Applied:
Verify the version is updated to 10.0.0.5 or later and test that the legacy chat component functions properly without exposing sensitive information.📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to chat component endpoints
- Failed authentication attempts followed by successful unauthenticated access
- Access to sensitive data directories via chat component
Network Indicators:
- Unusual traffic to legacy chat ports from unexpected sources
- Information disclosure in HTTP responses from chat endpoints
SIEM Query:
source="*MiContact*" AND (event_type="access" OR event_type="error") AND (url_path="*chat*" OR component="legacy_chat")