CVE-2023-30376 Explained : Impact and Mitigation

A stack-based buffer overflow vulnerability has been identified in Tenda AC15 V15.03.05.19, specifically in the "henan_pppoe_user" function.

Understanding CVE-2023-30376

This CVE involves a critical security issue in the Tenda AC15 V15.03.05.19 router firmware.

What is CVE-2023-30376?

The vulnerability in the "henan_pppoe_user" function can lead to a stack-based buffer overflow when exploited by malicious actors, potentially allowing for arbitrary code execution.

The Impact of CVE-2023-30376

If successfully exploited, attackers could execute malicious code on the affected devices, leading to a complete compromise of the router and unauthorized access to sensitive information.

Technical Details of CVE-2023-30376

This section delves into the specifics of the vulnerability.

Vulnerability Description

The stack-based buffer overflow vulnerability in the "henan_pppoe_user" function allows attackers to overwrite the memory beyond the allocated buffer, enabling them to execute arbitrary code.

Affected Systems and Versions

Tenda AC15 V15.03.05.19 is confirmed to be impacted by this vulnerability, raising concerns for users of this particular firmware version.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by crafting specific input to the affected function, triggering the buffer overflow and potentially gaining unauthorized access.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2023-30376.

Immediate Steps to Take

Users are advised to update their Tenda AC15 routers to a secure firmware version that addresses this vulnerability. Additionally, monitoring network traffic for any suspicious activity is recommended to detect potential exploitation attempts.

Long-Term Security Practices

In the long term, practicing network segmentation, ensuring regular security assessments, and keeping software up to date are essential to prevent such vulnerabilities.

Patching and Updates

Tenda users should regularly check for firmware updates on the official Tenda website to patch security vulnerabilities and protect their devices from potential threats.