CVE-2023-27514
📋 TL;DR
This CVE describes an OS command injection vulnerability in SolarView Compact devices that allows remote authenticated attackers to execute arbitrary commands on the system. It affects SV-CPT-MC310 and SV-CPT-MC310F versions before 8.10. Attackers with valid credentials can exploit this to gain full control of affected devices.
💻 Affected Systems
- SolarView Compact SV-CPT-MC310
- SolarView Compact SV-CPT-MC310F
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to install persistent backdoors, exfiltrate sensitive data, pivot to internal networks, or disrupt industrial operations.
Likely Case
Attackers gaining shell access to execute commands, potentially leading to data theft, lateral movement, or denial of service.
If Mitigated
Limited impact if proper network segmentation, authentication controls, and monitoring are in place to detect and block exploitation attempts.
🎯 Exploit Status
Exploitation requires authenticated access to the download page. Command injection vulnerabilities are typically straightforward to exploit once authentication is bypassed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Ver.8.10
Vendor Advisory: https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_solarview_230508.pdf
Restart Required: Yes
Instructions:
1. Download firmware version 8.10 from Contec's official website. 2. Follow vendor's firmware update procedure. 3. Verify successful update and restart device.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to SolarView web interface to trusted IP addresses only
Authentication Hardening
allChange default credentials, enforce strong passwords, and implement account lockout policies
🧯 If You Can't Patch
- Isolate affected devices in a separate network segment with strict firewall rules
- Implement network monitoring and intrusion detection for command injection patterns
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or SSH. If version is below 8.10, device is vulnerable.Check Version:
Check via web interface admin panel or SSH: cat /etc/version or similar vendor-specific commandVerify Fix Applied:
Verify firmware version shows 8.10 or higher after update. Test download page functionality to ensure commands cannot be injected.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in system logs
- Multiple failed authentication attempts followed by successful login
- Download page access with suspicious parameters
Network Indicators:
- Unexpected outbound connections from SolarView devices
- Command and control traffic patterns
- Unusual HTTP requests to download endpoints
SIEM Query:
source="solarview" AND (url="*download*" AND (param="*;*" OR param="*|*" OR param="*`*"))🔗 References
- https://jvn.jp/en/vu/JVNVU92106300/
- https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_solarview_230508.pdf
- https://www.contec.com/jp/download/donwload-list/?itemid=b28c8b7c-9f40-40b2-843c-b5b04c035b0e#firmware
- https://jvn.jp/en/vu/JVNVU92106300/
- https://www.contec.com/jp/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_solarview_230508.pdf
- https://www.contec.com/jp/download/donwload-list/?itemid=b28c8b7c-9f40-40b2-843c-b5b04c035b0e#firmware
