CVE-2020-25147
📋 TL;DR
CVE-2020-25147 is a critical SQL injection vulnerability in Observium network monitoring software that allows attackers to execute arbitrary SQL commands via malformed username parameters. This affects all Observium Professional, Enterprise, and Community editions. Attackers can potentially gain unauthorized access, extract sensitive data, or compromise the entire Observium installation.
💻 Affected Systems
- Observium Professional
- Observium Enterprise
- Observium Community
📦 What is this software?
Observium by Observium
Observium by Observium
Observium by Observium
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Observium database leading to credential theft, data exfiltration, privilege escalation, and potential lateral movement to connected network devices.
Likely Case
Unauthorized access to Observium data, extraction of sensitive network monitoring information, and potential authentication bypass.
If Mitigated
Limited impact with proper input validation, parameterized queries, and network segmentation in place.
🎯 Exploit Status
Exploit code is publicly available and requires minimal technical skill to execute. The vulnerability is in the authentication endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 20.8.10632 and later
Vendor Advisory: https://www.observium.org/security/
Restart Required: No
Instructions:
1. Backup your Observium installation and database. 2. Update to Observium version 20.8.10632 or later. 3. Apply the patch from the official Observium repository. 4. Verify the fix by testing authentication functionality.
🔧 Temporary Workarounds
Input Validation Filter
linuxAdd input validation to filter malicious SQL characters in username parameters
Modify includes/authenticate.inc.php to sanitize username[0] parameter
Web Application Firewall
allDeploy WAF rules to block SQL injection patterns
Add SQL injection detection rules to your WAF configuration
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Observium from untrusted networks
- Deploy a web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check if Observium version is 20.8.10631 or earlier. Test authentication endpoint with SQL injection payloads in username[0] parameter.Check Version:
grep '\$config\[\'version\'\]' includes/definitions.inc.phpVerify Fix Applied:
Verify Observium version is 20.8.10632 or later. Test that SQL injection attempts in username[0] parameter are properly rejected.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts with SQL syntax in username field
- Unexpected database queries from web application
Network Indicators:
- SQL injection patterns in HTTP POST requests to authentication endpoint
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND (url="/" OR url="index.php") AND (username CONTAINS "'" OR username CONTAINS "--" OR username CONTAINS ";")