CVE-2017-20022
📋 TL;DR
This vulnerability in Solar-Log monitoring systems allows remote attackers to access sensitive information without authentication. It affects Solar-Log devices running vulnerable firmware versions, potentially exposing configuration data, system information, or other sensitive details to unauthorized parties.
💻 Affected Systems
- Solare Solar-Log
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain access to sensitive system information, credentials, or configuration data that could enable further attacks or facilitate physical security breaches.
Likely Case
Unauthorized access to system information, configuration details, or monitoring data that could be used for reconnaissance or planning additional attacks.
If Mitigated
Limited exposure of non-critical information with proper network segmentation and access controls in place.
🎯 Exploit Status
The vulnerability allows remote exploitation without authentication. Public disclosure includes technical details that could facilitate exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.5.3-86
Vendor Advisory: https://www.solar-log.com/en/
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Download firmware version 3.5.3-86 from Solar-Log vendor portal. 3. Upload firmware to device via web interface. 4. Apply update and restart device. 5. Verify successful update.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Solar-Log devices from untrusted networks and restrict access to management interfaces.
Access Control Lists
allImplement firewall rules to restrict access to Solar-Log web interface and management ports.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Solar-Log devices from untrusted networks
- Deploy web application firewall (WAF) or reverse proxy with strict access controls
🔍 How to Verify
Check if Vulnerable:
Check firmware version in Solar-Log web interface under System > Information. If version is between 2.8.4-56 and 3.5.2-85 inclusive, system is vulnerable.Check Version:
Check via web interface or SSH if enabled: cat /etc/versionVerify Fix Applied:
Verify firmware version shows 3.5.3-86 or later in System > Information page.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to information disclosure endpoints
- Unusual request patterns to Solar-Log web interface
Network Indicators:
- External IP addresses accessing Solar-Log management ports (typically 80/443)
- Unusual traffic patterns to Solar-Log devices
SIEM Query:
source_ip=external AND dest_port IN (80,443) AND dest_ip=solar_log_device AND uri_path CONTAINS '/cgi-bin/'