SQL Injection in UTT nv518G Firmware

Executive Summary

This vulnerability is a SQL Injection issue found in the UTT nv518G nv518GV3v3.2.7-210919-161313 device. It allows a remote attacker to execute arbitrary code by exploiting the gohead/sub_463bbc component.

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Detection Guidance

This SQL injection vulnerability can be detected by sending crafted POST requests to the vulnerable endpoint `/gohead/sub_463bbc` and observing the response for signs of SQL injection.

A proof-of-concept involves sending a POST request with the parameter `delsn` set to a payload such as `" or 1=1 --` to test if the system is vulnerable.

Example command using curl to test the vulnerability:

• curl -X POST http://[target]/gohead/sub_463bbc -d 'delsn=" or 1=1 --'

Additionally, monitoring for unusual DNS lookups, delays, or command execution attempts in logs may help detect exploitation attempts, as attackers may use commands like `nslookup`, `curl`, or `sleep` to probe or exploit the system.

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Impact Analysis

The vulnerability can allow a remote attacker to execute arbitrary code on the affected device, potentially leading to unauthorized access, data manipulation, or control over the system.

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Compliance Impact

The SQL Injection vulnerability in UTT nv518G nv518GV3v3.2.7-210919-161313 allows remote attackers to execute arbitrary code, which can lead to unauthorized access, data breaches, and manipulation of sensitive information.

Such unauthorized access and potential data compromise can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive data against breaches and unauthorized access.

Failure to address this vulnerability could result in violations of these regulations due to compromised confidentiality, integrity, and availability of protected data.

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Mitigation Strategies

Immediate mitigation steps include restricting access to the vulnerable endpoint `/gohead/sub_463bbc` to trusted users or networks only.

Applying any available firmware updates or patches from the vendor that address this SQL injection vulnerability is critical.

If patching is not immediately possible, consider implementing web application firewall (WAF) rules to detect and block malicious payloads targeting the `delsn` parameter.

Monitoring network traffic and logs for suspicious POST requests containing SQL injection patterns can help in early detection and response.

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