CVE-2023-37718 : Security Advisory and Response
Learn about CVE-2023-37718, a stack overflow vulnerability in Tenda F1202 routers. Find out the impact, affected systems, exploitation method, and mitigation steps.
This article provides an overview of CVE-2023-37718, a vulnerability found in Tenda F1202 V1.0BR_V1.2.0.20(408) and FH1202_V1.2.0.19_EN, leading to a stack overflow in the page parameter within the function fromSafeClientFilter.
Understanding CVE-2023-37718
This section delves into the details of the CVE-2023-37718 vulnerability affecting Tenda routers.
What is CVE-2023-37718?
CVE-2023-37718 is a security vulnerability discovered in Tenda F1202 and FH1202 routers. It allows malicious actors to trigger a stack overflow by manipulating the page parameter in the fromSafeClientFilter function.
The Impact of CVE-2023-37718
The exploitation of CVE-2023-37718 could lead to a denial of service (DoS) condition or potentially remote code execution on the affected Tenda routers.
Technical Details of CVE-2023-37718
In this section, we explore the technical aspects of the CVE-2023-37718 vulnerability.
Vulnerability Description
The vulnerability arises due to insufficient input validation in the 'fromSafeClientFilter' function, enabling an attacker to overflow the stack by sending specially crafted requests.
Affected Systems and Versions
Tenda F1202 V1.0BR_V1.2.0.20(408) and FH1202_V1.2.0.19_EN routers are confirmed to be affected by CVE-2023-37718.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending malicious requests with a manipulated 'page' parameter, triggering a stack overflow and potentially gaining unauthorized access.
Mitigation and Prevention
This section outlines the measures to mitigate the risks associated with CVE-2023-37718.
Immediate Steps to Take
Users are advised to restrict network access to the affected routers and apply vendor-supplied patches or updates promptly.
Long-Term Security Practices
Implement network segmentation, strong access controls, and regular security audits to prevent similar vulnerabilities in the future.
Patching and Updates
Regularly check for firmware updates from Tenda and apply patches as soon as they become available to protect against CVE-2023-37718.