CVE-2022-44259 : Exploit Details and Defense Strategies

A buffer overflow vulnerability was found in TOTOLINK LR350 V9.3.5u.6369_B20220309, allowing attackers to execute arbitrary code via certain parameters.

Understanding CVE-2022-44259

This CVE-2022-44259 article provides insights into the vulnerability, its impact, technical details, and mitigation strategies.

What is CVE-2022-44259?

The CVE-2022-44259 vulnerability exists in TOTOLINK LR350 V9.3.5u.6369_B20220309 due to a post-authentication buffer overflow in the setParentalRules function when processing specific parameters.

The Impact of CVE-2022-44259

The buffer overflow in TOTOLINK LR350 V9.3.5u.6369_B20220309 could be exploited by authenticated attackers to execute arbitrary code on the affected system, potentially leading to a complete system compromise.

Technical Details of CVE-2022-44259

This section dives into the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

TOTOLINK LR350 V9.3.5u.6369_B20220309 is vulnerable to a buffer overflow during the processing of 'week,' 'sTime,' and 'eTime' parameters in the setParentalRules function, enabling attackers to trigger arbitrary code execution.

Affected Systems and Versions

The vulnerability affects TOTOLINK LR350 V9.3.5u.6369_B20220309 prior to a specific patch, putting these versions at risk of exploitation.

Exploitation Mechanism

By sending crafted requests with malicious input in the 'week,' 'sTime,' and 'eTime' parameters, threat actors can trigger the buffer overflow and execute unauthorized code on the target device.

Mitigation and Prevention

In this section, we outline immediate steps to take and long-term security practices to mitigate the risks associated with CVE-2022-44259.

Immediate Steps to Take

Immediately apply any available patches or updates provided by TOTOLINK to address the buffer overflow vulnerability.
Monitor network traffic for any signs of exploit attempts targeting the affected parameters.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent potential vulnerabilities.
Implement network segmentation to minimize the impact of successful intrusions.

Patching and Updates

Keep abreast of security advisories from TOTOLINK and promptly apply patches to ensure protection against known vulnerabilities in TOTOLINK LR350 V9.3.5u.6369_B20220309.