CVE-2022-30475 : What You Need to Know

A stack-based buffer overflow vulnerability was discovered in the Tenda AC Series Router AC18_V15.03.05.19(6318) in the httpd module when handling /goform/WifiExtraSet request.

Understanding CVE-2022-30475

This CVE involves a critical vulnerability in the Tenda AC Series Router AC18_V15.03.05.19(6318) that allows an attacker to exploit a stack-based buffer overflow.

What is CVE-2022-30475?

The CVE-2022-30475 vulnerability affects Tenda AC Series Router AC18_V15.03.05.19(6318) and exposes a security flaw in the httpd module while processing specific requests.

The Impact of CVE-2022-30475

The exploitation of this vulnerability could lead to remote code execution, denial of service, or unauthorized access to the affected router, compromising the security and integrity of the device and data.

Technical Details of CVE-2022-30475

This section delves into the specifics of the vulnerability, including the description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The stack-based buffer overflow occurs in the httpd module of the Tenda AC Series Router AC18_V15.03.05.19(6318) when processing the /goform/WifiExtraSet request, allowing an attacker to overwrite the stack buffer and potentially execute arbitrary code.

Affected Systems and Versions

The vulnerability impacts Tenda AC Series Router AC18_V15.03.05.19(6318) with the specified firmware version, creating a risk for users of this particular router model.

Exploitation Mechanism

By sending a specially crafted request to the /goform/WifiExtraSet endpoint, an attacker can trigger the stack-based buffer overflow, gaining unauthorized control over the router.

Mitigation and Prevention

Protecting against CVE-2022-30475 requires immediate action and the implementation of long-term security practices to safeguard devices from such vulnerabilities.

Immediate Steps to Take

Users are advised to update the router firmware to a patched version provided by Tenda to mitigate the vulnerability. Additionally, restricting network access and implementing strong firewall rules can help reduce the risk of exploitation.

Long-Term Security Practices

Regularly updating firmware, conducting security audits, and monitoring network traffic for suspicious activities are recommended practices to enhance the overall security posture and prevent potential attacks.

Patching and Updates

Stay informed about security alerts and updates from Tenda regarding CVE-2022-30475. Timely installation of patches and security updates is crucial to address known vulnerabilities and protect against emerging threats.