CVE-2023-27063 : Security Advisory and Response

This CVE-2023-27063 was published on March 13, 2023. It involves a buffer overflow vulnerability in the Tenda V15V1.0 V15.11.0.14(1521_3190_1058) router, specifically in the DNSDomainName parameter within the formModifyDnsForward function. This vulnerability can be exploited by attackers to launch a Denial of Service (DoS) attack by sending a specially crafted request.

Understanding CVE-2023-27063

This section will cover the details regarding CVE-2023-27063, including the vulnerability description, impact, affected systems, and mitigation strategies.

What is CVE-2023-27063?

The CVE-2023-27063 vulnerability pertains to a buffer overflow issue in the Tenda V15V1.0 router firmware, specifically impacting the DNSDomainName parameter within the formModifyDnsForward function. By exploiting this vulnerability, attackers can trigger a Denial of Service (DoS) attack on the affected device.

The Impact of CVE-2023-27063

The impact of CVE-2023-27063 is significant as it allows malicious actors to disrupt the normal operation of the Tenda V15V1.0 router by sending specially crafted requests, leading to a Denial of Service (DoS) condition.

Technical Details of CVE-2023-27063

This section will provide more in-depth technical information about CVE-2023-27063, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in Tenda V15V1.0 V15.11.0.14(1521_3190_1058) router stems from a buffer overflow in the DNSDomainName parameter within the formModifyDnsForward function. This flaw can be exploited to execute a Denial of Service (DoS) attack on the router.

Affected Systems and Versions

The CVE-2023-27063 vulnerability impacts Tenda V15V1.0 V15.11.0.14(1521_3190_1058) routers. It is essential for users of this specific device and firmware version to be aware of this security issue.

Exploitation Mechanism

Attackers can exploit the buffer overflow vulnerability in CVE-2023-27063 by sending a malicious request containing crafted data to the DNSDomainName parameter in the formModifyDnsForward function, leading to a DoS attack on the Tenda router.

Mitigation and Prevention

To address CVE-2023-27063 and enhance the security of Tenda V15V1.0 V15.11.0.14(1521_3190_1058) routers, users should take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Disable remote access to the router administration interface if not required.
Implement strong and unique passwords for router access.
Regularly monitor network traffic and log for any suspicious activity.

Long-Term Security Practices

Keep router firmware up to date with the latest security patches.
Conduct regular security audits and vulnerability assessments on the network infrastructure.
Educate users on best practices for network security and awareness of phishing attacks.

Patching and Updates

Users should regularly check for firmware updates provided by Tenda for the V15V1.0 V15.11.0.14(1521_3190_1058) router. Applying security patches promptly can help mitigate the risk of exploitation associated with CVE-2023-27063.