CVE-2024-31964
📋 TL;DR
This vulnerability allows unauthenticated attackers to bypass authentication on affected Mitel SIP phones and conference units. Attackers could modify system configurations or cause denial of service. Organizations using Mitel 6800/6900/6970 series devices with vulnerable firmware are affected.
💻 Affected Systems
- Mitel 6800 Series SIP Phones
- Mitel 6900 Series SIP Phones
- Mitel 6900w Series SIP Phones
- Mitel 6970 Conference Unit
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise allowing configuration changes, call interception, or permanent device bricking through DoS.
Likely Case
Unauthorized configuration changes disrupting phone services, call routing manipulation, or temporary service disruption.
If Mitigated
Limited impact if devices are isolated on internal networks with strict access controls and monitored for configuration changes.
🎯 Exploit Status
Vulnerability allows authentication bypass without credentials. Attack complexity appears low based on CVE description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Mitel advisory for specific fixed versions per product
Vendor Advisory: https://www.mitel.com/support/security-advisories/mitel-product-security-advisory-24-0007
Restart Required: Yes
Instructions:
1. Review Mitel advisory 24-0007. 2. Identify affected devices. 3. Download appropriate firmware updates from Mitel support portal. 4. Apply updates following Mitel documentation. 5. Reboot devices after update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate SIP phones on separate VLANs with strict firewall rules
Access Control Lists
allImplement ACLs to restrict access to phone management interfaces
🧯 If You Can't Patch
- Segment phone network from general corporate network
- Implement strict firewall rules blocking external access to phone management interfaces
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or phone menu: System Information > Software VersionCheck Version:
Via phone menu: Menu > Settings > System Information > Software VersionVerify Fix Applied:
Verify firmware version is above vulnerable ranges specified in Mitel advisory📡 Detection & Monitoring
Log Indicators:
- Unauthorized configuration changes in phone logs
- Multiple failed authentication attempts followed by successful access
- Unexpected firmware or configuration modifications
Network Indicators:
- Unusual traffic to phone management ports (typically 80/443)
- Configuration changes from unexpected IP addresses
- SIP protocol anomalies
SIEM Query:
source="phone_logs" AND (event_type="config_change" OR auth_result="success") FROM unknown_ip