CVE-2022-30474 : Exploit Details and Defense Strategies

A heap overflow vulnerability was discovered in the httpd module of Tenda AC Series Router AC18_V15.03.05.19(6318) when handling /goform/saveParentControlInfo request.

Understanding CVE-2022-30474

This CVE identifies a specific vulnerability in the Tenda AC Series Router AC18_V15.03.05.19(6318) related to heap overflow in the httpd module.

What is CVE-2022-30474?

CVE-2022-30474 is a heap overflow vulnerability found in the httpd module of Tenda AC Series Router AC18_V15.03.05.19(6318) that occurs when processing the /goform/saveParentControlInfo request.

The Impact of CVE-2022-30474

This vulnerability could allow an attacker to execute arbitrary code on the affected router, potentially leading to a complete compromise of the device and unauthorized access to sensitive information.

Technical Details of CVE-2022-30474

This section outlines the specific technical aspects of the vulnerability.

Vulnerability Description

The heap overflow vulnerability occurs in the httpd module of Tenda AC Series Router AC18_V15.03.05.19(6318) during the processing of the /goform/saveParentControlInfo request, which could be exploited by an attacker.

Affected Systems and Versions

The vulnerability affects Tenda AC Series Router AC18_V15.03.05.19(6318).

Exploitation Mechanism

By sending a specially crafted /goform/saveParentControlInfo request, an attacker can trigger the heap overflow, potentially leading to remote code execution.

Mitigation and Prevention

To address CVE-2022-30474, immediate steps and long-term security measures can be taken.

Immediate Steps to Take

Update the router firmware to the latest patched version provided by the vendor.
Restrict network access to the router to trusted entities only.

Long-Term Security Practices

Regularly monitor for security updates and patches from Tenda or the router vendor.
Implement network segmentation to contain potential compromises.

Patching and Updates

Stay informed about security advisories and apply patches promptly to ensure the protection of your devices against known vulnerabilities.