CVE-2023-36340 : What You Need to Know

A stack overflow vulnerability was discovered in TOTOLINK NR1800X V9.1.0u.6279_B20210910, allowing attackers to execute arbitrary code via the http_host parameter during login authentication.

Understanding CVE-2023-36340

This section will cover what CVE-2023-36340 is, its impact, technical details, and mitigation strategies.

What is CVE-2023-36340?

CVE-2023-36340 is a stack overflow vulnerability found in TOTOLINK NR1800X V9.1.0u.6279_B20210910 that can be exploited through the http_host parameter in the loginAuth function.

The Impact of CVE-2023-36340

This vulnerability allows remote attackers to execute arbitrary code, potentially leading to a complete compromise of the affected system.

Technical Details of CVE-2023-36340

In this section, we will delve into the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability arises due to inadequate input validation of the http_host parameter within the loginAuth function, leading to a stack overflow.

Affected Systems and Versions

The TOTOLINK NR1800X V9.1.0u.6279_B20210910 version is confirmed to be affected by CVE-2023-36340.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specially crafted http_host parameter, triggering a stack overflow and potentially executing malicious code.

Mitigation and Prevention

Learn how to protect your systems by taking immediate steps and adopting long-term security measures.

Immediate Steps to Take

Immediately disable remote access to the affected device and monitor for any suspicious activities on the network.

Long-Term Security Practices

Implement strong input validation mechanisms, regularly update firmware, and educate users on secure authentication practices.

Patching and Updates

Check for vendor-supplied patches and apply them promptly to remediate the vulnerability.