CVE-2023-7095 : What You Need to Know

This article discusses the critical vulnerability identified as CVE-2023-7095 in Totolink A7100RU 7.4cu.2313_B20191024, affecting the HTTP POST Request main buffer overflow. The exploit allows for remote attacks with severe consequences.

Understanding CVE-2023-7095

CVE-2023-7095 is a critical vulnerability found in Totolink A7100RU 7.4cu.2313_B20191024, specifically in the main function of the /cgi-bin/cstecgi.cgi?action=login file within the HTTP POST Request Handler component. The vulnerability arises due to buffer overflow caused by the manipulation of the flag argument. It can be exploited remotely, posing a significant risk.

What is CVE-2023-7095?

CVE-2023-7095 is a critical vulnerability in Totolink A7100RU 7.4cu.2313_B20191024, allowing for a buffer overflow through the manipulation of the flag argument in the main function of the HTTP POST Request Handler component. The exploit is publicly available, increasing the potential for malicious activities.

The Impact of CVE-2023-7095

The impact of CVE-2023-7095 is severe, given its criticality and the remote exploitation capability. Attackers can leverage this vulnerability to execute unauthorized code, leading to potential data breaches, system compromise, and other malicious activities.

Technical Details of CVE-2023-7095

CVE-2023-7095 involves a buffer overflow vulnerability in Totolink A7100RU 7.4cu.2313_B20191024 within the main function of the /cgi-bin/cstecgi.cgi?action=login file of the HTTP POST Request Handler component.

Vulnerability Description

The vulnerability stems from improper input validation in the flag argument, allowing attackers to overflow the buffer and execute arbitrary code remotely.

Affected Systems and Versions

The affected system is Totolink A7100RU version 7.4cu.2313_B20191024 with the HTTP POST Request Handler component.

Exploitation Mechanism

Attackers can exploit CVE-2023-7095 by manipulating the flag argument remotely to trigger the buffer overflow, potentially leading to unauthorized code execution.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2023-7095 and prevent potential exploitation.

Immediate Steps to Take

Disable remote access if not needed to mitigate the risk of remote exploitation.
Monitor network traffic for any suspicious activities involving the affected system.
Apply recommended patches and updates from Totolink to address the vulnerability.

Long-Term Security Practices

Implement proper input validation and secure coding practices to prevent buffer overflow vulnerabilities.
Regularly update and patch software components to address known security issues and vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential weaknesses proactively.

Patching and Updates

Totolink should release patches promptly to fix the vulnerability in affected versions of the A7100RU router.
Users are advised to apply the latest security updates provided by Totolink to secure their systems against CVE-2023-7095.