CVE-2018-17875
📋 TL;DR
This vulnerability allows remote authenticated users to execute arbitrary commands on Poly Trio 8800 devices through the ping command. Attackers with valid credentials can achieve remote code execution, potentially compromising the entire device. Only Poly Trio 8800 devices running specific vulnerable firmware versions are affected.
💻 Affected Systems
- Poly Trio 8800
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to lateral movement within the network, data exfiltration, or use as a pivot point for further attacks.
Likely Case
Unauthorized command execution allowing attackers to modify device settings, install malware, or disrupt communications.
If Mitigated
Limited impact with proper network segmentation and authentication controls preventing unauthorized access.
🎯 Exploit Status
Exploit details are publicly documented; requires valid credentials but command injection is straightforward once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.8.0 and later
Vendor Advisory: https://support.polycom.com/content/support/emea/emea/en/support/voice/polycom-trio/polycom-trio-8800.html
Restart Required: Yes
Instructions:
1. Download latest firmware from Polycom support portal. 2. Upload firmware to device via web interface. 3. Apply update. 4. Reboot device.
🔧 Temporary Workarounds
Restrict network access
allLimit device access to trusted networks only
Strengthen authentication
allEnforce strong passwords and consider multi-factor authentication
🧯 If You Can't Patch
- Isolate device on separate VLAN with strict firewall rules
- Disable ping functionality if not required for operations
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface: System > Information > Software VersionCheck Version:
Not applicable - use web interfaceVerify Fix Applied:
Confirm version is 5.8.0 or higher after update📡 Detection & Monitoring
Log Indicators:
- Unusual ping command patterns
- Multiple failed authentication attempts followed by successful login
Network Indicators:
- Unexpected outbound connections from device
- Unusual command execution patterns in network traffic
SIEM Query:
source="polycom-trio" AND (event="ping" OR event="command_execution")🔗 References
- http://unkl4b.github.io/Authenticated-RCE-in-Polycom-Trio-8800-pt-1/
- https://support.polycom.com/content/support/emea/emea/en/support/voice/polycom-trio/polycom-trio-8800.html
- http://unkl4b.github.io/Authenticated-RCE-in-Polycom-Trio-8800-pt-1/
- https://support.polycom.com/content/support/emea/emea/en/support/voice/polycom-trio/polycom-trio-8800.html
