CVE-2023-7187 : Vulnerability Insights and Analysis

This CVE-2023-7187 pertains to a critical vulnerability found in Totolink N350RT version 9.3.5u.6139_B20201216 related to a stack-based buffer overflow in the HTTP POST Request Handler component.

Understanding CVE-2023-7187

This vulnerability in the Totolink N350RT device has been categorized as critical due to its potential impact on system security. It involves a stack-based buffer overflow within the HTTP POST Request Handler component of the affected version.

What is CVE-2023-7187?

The vulnerability identified as CVE-2023-7187 in Totolink N350RT version 9.3.5u.6139_B20201216 allows for manipulation of certain file processing, leading to a stack-based buffer overflow. An attacker could exploit this issue, potentially compromising the security and integrity of the system. The vulnerability has been rated as critical.

The Impact of CVE-2023-7187

This vulnerability poses a significant threat as it allows unauthorized individuals to execute arbitrary code on the affected system, potentially leading to a complete system compromise. It can be exploited remotely and may result in sensitive data exposure or system disruption.

Technical Details of CVE-2023-7187

In this section, we will delve into the specific technical details of CVE-2023-7187 to provide a deeper understanding of the vulnerability.

Vulnerability Description

The CVE-2023-7187 vulnerability in Totolink N350RT version 9.3.5u.6139_B20201216 involves a stack-based buffer overflow within the HTTP POST Request Handler component. By manipulating certain unspecified processing of a file, an attacker could trigger this vulnerability, leading to potential exploitation.

Affected Systems and Versions

The affected product is Totolink N350RT, specifically version 9.3.5u.6139_B20201216. The vulnerability impacts systems utilizing the HTTP POST Request Handler module.

Exploitation Mechanism

Exploiting CVE-2023-7187 involves sending specifically crafted data to the /cgi-bin/cstecgi.cgi?action=login&flag=ie8 file within the HTTP POST Request Handler. This manipulation triggers a stack-based buffer overflow, which could be leveraged by threat actors to execute malicious code.

Mitigation and Prevention

In response to CVE-2023-7187, it is crucial for users and organizations to implement effective mitigation and prevention strategies to safeguard their systems against potential exploitation.

Immediate Steps to Take

Organizations should apply security patches or updates provided by Totolink to address the vulnerability promptly.
Implement network segmentation and access controls to limit exposure to the vulnerable component.
Monitor network traffic for any suspicious activities that may indicate exploitation attempts.

Long-Term Security Practices

Regularly update and patch all software and firmware to mitigate security vulnerabilities proactively.
Conduct regular security assessments and penetration testing to identify and remediate potential weaknesses.
Educate users and system administrators about secure coding practices and the risks associated with buffer overflow vulnerabilities.

Patching and Updates

Users of Totolink N350RT version 9.3.5u.6139_B20201216 should promptly apply the provided patches or updates from the vendor to address the CVE-2023-7187 vulnerability. Timely patching is crucial to prevent exploitation and enhance the overall security posture of the affected systems.