CVE-2020-29574
📋 TL;DR
This SQL injection vulnerability in Cyberoam OS WebAdmin allows unauthenticated attackers to execute arbitrary SQL commands remotely. It affects Cyberoam OS installations through December 4, 2020. Attackers can potentially gain administrative access, extract sensitive data, or compromise the entire system.
💻 Affected Systems
- Cyberoam OS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise: attackers gain administrative access, extract all configuration data, credentials, and network information, potentially pivoting to internal networks or deploying ransomware.
Likely Case
Data exfiltration and credential theft: attackers extract administrator credentials, firewall rules, VPN configurations, and user data, leading to further network compromise.
If Mitigated
Limited impact due to network segmentation, WebAdmin interface not exposed to internet, and proper input validation in place.
🎯 Exploit Status
SQL injection requires no authentication and can be exploited with simple HTTP requests to the WebAdmin interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2020-12-04
Vendor Advisory: https://www.cyberoam.com/ngfw.html
Restart Required: Yes
Instructions:
1. Log into Cyberoam WebAdmin interface
2. Navigate to System > Maintenance > Firmware Upgrade
3. Upload and install the latest firmware version
4. Reboot the device after installation completes
🔧 Temporary Workarounds
Restrict WebAdmin Access
linuxLimit WebAdmin interface access to trusted IP addresses only using firewall rules.
# Configure firewall to allow only specific IPs to port 443 (HTTPS) and 80 (HTTP)
# Example: iptables -A INPUT -p tcp --dport 443 -s TRUSTED_IP -j ACCEPT
# iptables -A INPUT -p tcp --dport 443 -j DROP
Disable WebAdmin Interface
linuxTemporarily disable the WebAdmin interface and use CLI or local console for management.
# Disable HTTP/HTTPS services
# service httpd stop
# chkconfig httpd off
🧯 If You Can't Patch
- Implement strict network segmentation: Isolate Cyberoam devices in a management VLAN with restricted access.
- Deploy a web application firewall (WAF) in front of the WebAdmin interface to filter SQL injection attempts.
🔍 How to Verify
Check if Vulnerable:
Check Cyberoam OS version via WebAdmin: System > About > Firmware Version. If version date is 2020-12-04 or earlier, system is vulnerable.Check Version:
# From CLI: show system version
# From WebAdmin: System > AboutVerify Fix Applied:
Verify firmware version shows date after 2020-12-04. Test WebAdmin interface functionality remains intact.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by successful access
- WebAdmin access from unexpected IP addresses
Network Indicators:
- HTTP POST requests to WebAdmin with SQL keywords (SELECT, UNION, etc.) in parameters
- Unusual outbound connections from Cyberoam device
SIEM Query:
source="cyberoam_logs" AND (http_uri="*WebAdmin*" AND (http_query="*SELECT*" OR http_query="*UNION*" OR http_query="*INSERT*"))🔗 References
- https://www.bleepingcomputer.com/news/security/sophos-fixes-sql-injection-vulnerability-in-their-cyberoam-os/
- https://www.cyberoam.com/ngfw.html
- https://www.bleepingcomputer.com/news/security/sophos-fixes-sql-injection-vulnerability-in-their-cyberoam-os/
- https://www.cyberoam.com/ngfw.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-29574
