CVE-2024-41687
📋 TL;DR
This vulnerability in SyroTech SY-GPON-1110-WDONT routers allows attackers to intercept passwords transmitted in plain text during HTTP sessions. Successful exploitation enables unauthorized access to the router's administrative interface. Organizations and individuals using these routers are affected.
💻 Affected Systems
- SyroTech SY-GPON-1110-WDONT Router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains full administrative control of the router, enabling traffic interception, network manipulation, credential theft from connected devices, and persistent backdoor installation.
Likely Case
Attacker captures administrative credentials and gains unauthorized access to router configuration, potentially changing settings, redirecting traffic, or disabling security features.
If Mitigated
With proper network segmentation and monitoring, impact is limited to the router itself, though credential exposure still poses risks to connected systems.
🎯 Exploit Status
Exploitation requires network access to intercept HTTP traffic; no authentication bypass needed once credentials are captured.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor for latest firmware
Vendor Advisory: https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2024-0225
Restart Required: Yes
Instructions:
1. Check vendor website for firmware updates. 2. Download latest firmware. 3. Access router admin interface. 4. Navigate to firmware update section. 5. Upload and apply update. 6. Reboot router.
🔧 Temporary Workarounds
Disable HTTP administrative access
allDisable HTTP access to router administrative interface, forcing HTTPS-only connections if supported.
Network segmentation
allIsolate router management interface to dedicated VLAN with strict access controls.
🧯 If You Can't Patch
- Implement network monitoring for suspicious HTTP traffic to router management interface
- Change administrative credentials regularly and monitor for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Use network analyzer (Wireshark) to capture HTTP traffic to router admin interface and check if credentials are transmitted in plain text.Check Version:
Login to router admin interface and check firmware version in system status page.Verify Fix Applied:
After patching, verify HTTPS is enforced for admin access and credentials are no longer visible in plain text network captures.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts followed by successful login from unusual IP
- Configuration changes from unauthorized IP addresses
Network Indicators:
- HTTP POST requests to login endpoints with credential parameters in plain text
- Unusual traffic patterns to/from router management interface
SIEM Query:
source_ip=router_management_interface AND (http_method=POST AND uri CONTAINS 'login' OR 'auth')