CVE-2023-27064 : Exploit Details and Defense Strategies

This CVE-2023-27064 entry pertains to a buffer overflow vulnerability discovered in Tenda V15V1.0 V15.11.0.14(1521_3190_1058). The vulnerability lies in the index parameter within the formDelDnsForward function, potentially leading to a Denial of Service (DoS) attack when exploited by malicious actors.

Understanding CVE-2023-27064

This section delves deeper into the nature and impact of CVE-2023-27064.

What is CVE-2023-27064?

CVE-2023-27064 is a buffer overflow vulnerability found in Tenda V15V1.0 V15.11.0.14(1521_3190_1058) through the index parameter in the formDelDnsForward function. Exploiting this flaw could enable attackers to launch a DoS attack by sending a specially crafted request.

The Impact of CVE-2023-27064

The impact of this vulnerability is significant as it provides a means for threat actors to disrupt services and potentially render the affected device or system inoperable, leading to service downtime and disruption.

Technical Details of CVE-2023-27064

In this section, we explore the technical aspects of CVE-2023-27064 to understand the vulnerability better.

Vulnerability Description

The buffer overflow vulnerability in Tenda V15V1.0 V15.11.0.14(1521_3190_1058) arises from improper handling of user input in the index parameter within the formDelDnsForward function, allowing attackers to overwrite adjacent memory locations and trigger a DoS condition.

Affected Systems and Versions

The affected system in this case is Tenda V15V1.0 V15.11.0.14(1521_3190_1058). The specific impacted versions are detailed in the CVE description.

Exploitation Mechanism

Exploiting this vulnerability involves crafting a specific request targeting the index parameter in the formDelDnsForward function to trigger the buffer overflow and subsequent DoS attack.

Mitigation and Prevention

To address CVE-2023-27064 and enhance cybersecurity posture, organizations and users should implement the following measures.

Immediate Steps to Take

Immediately apply any available patches or updates provided by Tenda for the affected device or system. Additionally, consider implementing network-level protections and access controls to mitigate the risk of exploitation.

Long-Term Security Practices

Adopt best security practices such as regular security assessments, timely software updates, user awareness training, and network segmentation to enhance overall resilience against potential vulnerabilities like buffer overflows.

Patching and Updates

Stay informed about security advisories from Tenda and promptly apply patches or updates released to address CVE-2023-27064. Regularly monitor for new developments and security alerts to proactively protect against emerging threats.