Stack-Based Buffer Overflow in TOTOLINK X2000R

Executive Summary

This is a stack-based buffer overflow vulnerability in the boa formTR069Config function of X2000R router firmware (version TOTOLINK-X2000R-Gh-V1.0.0-B20250421.1327). It allows arbitrary code execution when an attacker sends a specially crafted HTTP request. The vulnerability requires authentication to exploit.

Useful 0 Not Useful 0

Detection Guidance

Detecting this vulnerability requires checking for the presence of TOTOLINK X2000R devices running affected firmware versions. Inspect HTTP traffic for malformed requests targeting the formTR069Config endpoint. Use network scanning tools like Nmap to identify vulnerable devices by checking for open ports and firmware versions.

Useful 0 Not Useful 0

Impact Analysis

An attacker could gain control of the affected router, allowing them to execute arbitrary commands, steal data, or use the device as part of a botnet. Since it requires authentication, attackers would need valid credentials or to bypass authentication mechanisms.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating privacy regulations like GDPR or HIPAA. Organizations using affected devices may face compliance violations, data breaches, and potential legal consequences.

Useful 0 Not Useful 0

Mitigation Strategies

Immediately update the TOTOLINK X2000R firmware to the latest patched version. Disable remote or authenticated HTTP access to the device if not required. Implement network segmentation to isolate the device from critical systems. Monitor network traffic for suspicious HTTP requests targeting the formTR069Config endpoint.

Useful 0 Not Useful 0