CVE-2020-10617
📋 TL;DR
Unauthenticated attackers can perform SQL injection attacks on Advantech WebAccess/NMS versions before 3.0.2 to access sensitive information. This affects industrial control systems using this network management software, potentially exposing operational data and credentials.
💻 Affected Systems
- Advantech WebAccess/NMS
📦 What is this software?
Webaccess\/nms by Advantech
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the WebAccess/NMS system, extraction of all database contents including credentials, configuration data, and sensitive operational information, potentially leading to lateral movement within industrial networks.
Likely Case
Unauthenticated attackers extract sensitive configuration data, user credentials, and system information from the database, enabling further attacks or reconnaissance.
If Mitigated
Limited information disclosure if proper network segmentation and input validation controls are in place, but SQL injection vectors remain accessible.
🎯 Exploit Status
SQL injection vulnerabilities are well-understood attack vectors with many available tools. The unauthenticated nature makes exploitation straightforward for attackers with network access.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.2
Vendor Advisory: https://www.advantech.com/support/details/firmware?id=1KJQK8K8K8K8K8K
Restart Required: Yes
Instructions:
1. Download WebAccess/NMS version 3.0.2 from Advantech support portal. 2. Backup current configuration and database. 3. Run the installer to upgrade to version 3.0.2. 4. Restart the WebAccess/NMS service and verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate WebAccess/NMS systems from untrusted networks using firewalls or network segmentation.
Web Application Firewall
allDeploy a WAF with SQL injection protection rules in front of WebAccess/NMS.
🧯 If You Can't Patch
- Implement strict network access controls to limit connections to WebAccess/NMS only from trusted sources.
- Monitor for SQL injection attempts in application logs and network traffic.
🔍 How to Verify
Check if Vulnerable:
Check WebAccess/NMS version in the application interface or installation directory. Versions below 3.0.2 are vulnerable.Check Version:
Check Help > About in WebAccess/NMS interface or examine version.txt in installation directory.Verify Fix Applied:
Confirm version is 3.0.2 or higher in the application interface and test SQL injection vectors are no longer effective.📡 Detection & Monitoring
Log Indicators:
- Unusual database queries in application logs
- Multiple failed login attempts followed by SQL syntax in requests
- Unexpected database error messages containing SQL fragments
Network Indicators:
- SQL keywords in HTTP requests to WebAccess/NMS endpoints
- Unusual database connection patterns
- Requests with SQL injection payloads
SIEM Query:
source="webaccess_nms" AND ("sql" OR "select" OR "union" OR "' OR '1'='1") AND status=200