CVE-2023-47455 : What You Need to Know

A heap overflow vulnerability in Tenda AX1806 V1.0.0.1 can lead to a security issue due to insufficient parameter size validation.

Understanding CVE-2023-47455

This section provides insights into the impact and technical details of the CVE-2023-47455.

What is CVE-2023-47455?

The vulnerability in Tenda AX1806 V1.0.0.1 arises from a heap overflow issue in the setSchedWifi function. Attackers can exploit this flaw by providing maliciously crafted HTTP request parameters to trigger the overflow.

The Impact of CVE-2023-47455

CVE-2023-47455 allows attackers to execute arbitrary code or crash the affected system, leading to potential denial-of-service (DoS) conditions. This could result in system unavailability or compromise of sensitive information.

Technical Details of CVE-2023-47455

Below are the specific technical aspects of CVE-2023-47455.

Vulnerability Description

The vulnerability occurs in the setSchedWifi function of Tenda AX1806 V1.0.0.1 due to inadequate validation of the sizes of src and v12 parameters obtained from HTTP requests.

Affected Systems and Versions

All versions of Tenda AX1806 V1.0.0.1 are affected by this vulnerability.

Exploitation Mechanism

By providing specially crafted HTTP request parameters for schedStartTime and schedEndTime, an attacker can exploit the heap overflow vulnerability to execute arbitrary code or crash the system.

Mitigation and Prevention

To safeguard your systems from CVE-2023-47455, it is crucial to implement the following mitigation strategies.

Immediate Steps to Take

Disable any unnecessary services on the affected Tenda AX1806 devices to reduce the attack surface.
Monitor network traffic for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities and enhance security measures.
Conduct security training for users to raise awareness about safe online practices and mitigate social engineering attacks.

Patching and Updates

Stay informed about security advisories and updates released by Tenda for the AX1806 series. Apply patches promptly to address the heap overflow vulnerability and prevent potential exploitation.