CVE-2024-36829
📋 TL;DR
This vulnerability in Teldat M1 routers allows attackers to bypass access controls and retrieve sensitive information by manipulating query strings. It affects organizations using Teldat M1 routers with vulnerable firmware. Attackers can exploit this without authentication to access confidential data.
💻 Affected Systems
- Teldat M1 Router
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of router configuration, credentials, and network information leading to full network access and data exfiltration.
Likely Case
Unauthorized access to sensitive router configuration data, potentially exposing network topology and credentials.
If Mitigated
Limited information disclosure if proper network segmentation and access controls are implemented.
🎯 Exploit Status
Proof of concept available in GitHub gist showing simple HTTP request exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
Check Teldat vendor website for security updates. No official patch information available at this time.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict access to Teldat M1 management interface to trusted IP addresses only.
iptables -A INPUT -p tcp --dport 80 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
Disable Web Interface
allDisable HTTP management interface if not required, use CLI or secure alternatives.
telnet/SSH to router: disable http server
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Teldat M1 routers from untrusted networks
- Enable comprehensive logging and monitoring for suspicious HTTP requests to the management interface
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface or CLI. Test with crafted query string to sensitive endpoints.Check Version:
Check web interface or use CLI command: show versionVerify Fix Applied:
Verify firmware version is updated beyond v11.00.05.50.01. Test exploitation attempts fail.📡 Detection & Monitoring
Log Indicators:
- Unusual HTTP requests with crafted query strings
- Access to sensitive endpoints from unauthorized sources
Network Indicators:
- HTTP requests with unusual query parameters to router management IP
- Traffic patterns indicating information gathering
SIEM Query:
source_ip=ROUTER_IP AND (http_uri CONTAINS "sensitive" OR http_query CONTAINS unusual_patterns)