CVE-2023-27061 Explained : Impact and Mitigation

This CVE-2023-27061 was published by MITRE on March 13, 2023, and relates to a buffer overflow vulnerability found in Tenda V15V1.0 V15.11.0.14(1521_3190_1058). The vulnerability can be exploited via the wifiFilterListRemark parameter in the modifyWifiFilterRules function, potentially leading to a Denial of Service (DoS) attack when a malicious request is sent.

Understanding CVE-2023-20657

This section delves into the details of CVE-2023-27061, shedding light on the vulnerability it presents and the impact it can have if exploited.

What is CVE-2023-27061?

CVE-2023-27061 is a buffer overflow vulnerability within Tenda V15V1.0 V15.11.0.14(1521_3190_1058) that can be triggered by manipulating the wifiFilterListRemark parameter in the modifyWifiFilterRules function. This flaw enables threat actors to disrupt services by submitting a specifically crafted request to the affected device.

The Impact of CVE-2023-27061

The presence of this vulnerability opens the door for cyber attackers to perform Denial of Service (DoS) attacks on the target system. By exploiting this weakness, malicious actors can disrupt the normal functionality of the device, potentially causing service unavailability for legitimate users.

Technical Details of CVE-2023-27061

In this section, we explore the technical aspects of CVE-2023-27061, including the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The buffer overflow vulnerability in Tenda V15V1.0 V15.11.0.14(1521_3190_1058) arises due to inadequate input validation within the modifyWifiFilterRules function, specifically via the wifiFilterListRemark parameter. This flaw allows an attacker to exceed the allocated buffer size, leading to memory corruption and potential service disruption.

Affected Systems and Versions

The vulnerability affects Tenda V15V1.0 V15.11.0.14(1521_3190_1058) and potentially other versions running the same firmware. This particular product version is susceptible to exploitation via the specified parameter.

Exploitation Mechanism

To exploit CVE-2023-27061, attackers can craft a malicious request containing specially manipulated data in the wifiFilterListRemark parameter. By sending this malicious payload to the vulnerable device, threat actors can trigger a buffer overflow scenario, paving the way for a successful DoS attack.

Mitigation and Prevention

This section outlines the recommended steps to mitigate the risks posed by CVE-2023-27061 and prevent potential exploitation of the vulnerability.

Immediate Steps to Take

Users and administrators are advised to apply security patches or updates provided by Tenda promptly. Implementing network-level protections and access controls can also help prevent unauthorized exploitation of the vulnerability.

Long-Term Security Practices

To enhance overall cybersecurity posture, organizations should prioritize regular security assessments and audits to identify and address potential vulnerabilities proactively. Employee training on security best practices and incident response protocols can also bolster defenses against similar threats in the future.

Patching and Updates

Tenda users should stay vigilant for official security advisories or patches released by the vendor to address CVE-2023-27061. Timely installation of these updates is crucial to mitigate the risk of exploitation and ensure the security of the affected devices.