CVE-2023-40847 : Vulnerability Insights and Analysis

A buffer overflow vulnerability has been identified in Tenda AC6 US_AC6V1.0BR_V15.03.05.16 firmware version, allowing an attacker to execute arbitrary code by exploiting the "initIpAddrInfo" function.

Understanding CVE-2023-40847

This section delves into the details of the CVE-2023-40847 vulnerability.

What is CVE-2023-40847?

The vulnerability lies in the "initIpAddrInfo" function of the Tenda AC6 firmware, where user-provided parameters are not properly validated, leading to a buffer overflow condition that can be exploited by malicious actors.

The Impact of CVE-2023-40847

With this vulnerability, an attacker can potentially execute arbitrary code on the affected device, compromising its security and integrity.

Technical Details of CVE-2023-40847

Exploring the technical aspects of the CVE-2023-40847 vulnerability.

Vulnerability Description

The flaw allows an attacker to overflow the buffer by supplying excessive data to the "initIpAddrInfo" function, potentially leading to remote code execution.

Affected Systems and Versions

Tenda AC6 with firmware version US_AC6V1.0BR_V15.03.05.16 is affected by this vulnerability.

Exploitation Mechanism

By providing a specifically crafted parameter to the "initIpAddrInfo" function, an attacker can trigger the buffer overflow and execute malicious code.

Mitigation and Prevention

Understanding how to mitigate and prevent exploitation of CVE-2023-40847.

Immediate Steps to Take

Users are advised to update the firmware to a patched version provided by Tenda or apply any security advisories released by the vendor.

Long-Term Security Practices

Implementing network segmentation, restricting access to vulnerable services, and monitoring for any unusual network activity can enhance long-term security.

Patching and Updates

Regularly check for firmware updates from Tenda and apply them promptly to protect your device from potential exploits.