CVE-2019-7274
📋 TL;DR
CVE-2019-7274 is an authenticated file upload vulnerability in Optergy Proton/Enterprise building management devices that allows authenticated attackers to upload arbitrary files and execute code with root privileges. This affects Optergy Proton and Enterprise devices used for building automation and energy management. Attackers with valid credentials can achieve complete system compromise.
💻 Affected Systems
- Optergy Proton
- Optergy Enterprise
📦 What is this software?
Enterprise by Optergy
Proton by Optergy
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with root access, allowing attackers to install persistent backdoors, exfiltrate sensitive building control data, pivot to other network segments, or cause physical damage to building systems.
Likely Case
Attackers with stolen or default credentials upload web shells or malware to gain persistent remote access, potentially disrupting building operations or stealing sensitive information.
If Mitigated
With proper network segmentation and strong authentication controls, impact is limited to the building management network segment only.
🎯 Exploit Status
Exploit code is publicly available on Packet Storm Security. Requires valid credentials but many deployments use default credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.0b and later
Vendor Advisory: https://www.applied-risk.com/resources/ar-2019-008
Restart Required: Yes
Instructions:
1. Contact Optergy support for patch files. 2. Backup device configuration. 3. Apply firmware update to version 2.3.0b or later. 4. Restart device. 5. Verify update and reconfigure if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Optergy devices in separate VLAN with strict firewall rules limiting inbound connections.
Credential Hardening
allChange all default credentials and implement strong password policies with regular rotation.
🧯 If You Can't Patch
- Implement strict network access controls allowing only trusted IP addresses to access the management interface
- Deploy web application firewall (WAF) rules to block file upload attempts to vulnerable endpoints
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH. If version is 2.3.0a or earlier, device is vulnerable.Check Version:
ssh admin@[device_ip] 'cat /etc/version' or check via web interface System > AboutVerify Fix Applied:
Verify firmware version is 2.3.0b or later via device web interface or SSH. Test file upload functionality is properly restricted.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /upload endpoint
- Multiple failed login attempts followed by successful login and file upload
- Execution of unexpected processes as root
Network Indicators:
- HTTP POST requests to /upload with executable file extensions
- Outbound connections from Optergy device to unknown external IPs
SIEM Query:
source="optergy" AND (uri_path="/upload" OR process="root" AND cmdline="*upload*")🔗 References
- http://packetstormsecurity.com/files/155269/Optergy-2.3.0a-Remote-Root.html
- http://www.securityfocus.com/bid/108686
- https://applied-risk.com/labs/advisories
- https://www.applied-risk.com/resources/ar-2019-008
- http://packetstormsecurity.com/files/155269/Optergy-2.3.0a-Remote-Root.html
- http://www.securityfocus.com/bid/108686
- https://applied-risk.com/labs/advisories
- https://www.applied-risk.com/resources/ar-2019-008
