CVE-2022-44256 Explained : Impact and Mitigation

A post-authentication buffer overflow vulnerability has been identified in TOTOLINK LR350 V9.3.5u.6369_B20220309 via the parameter 'lang' in the setLanguageCfg function.

Understanding CVE-2022-44256

This section delves into the details of the CVE-2022-44256 vulnerability.

What is CVE-2022-44256?

CVE-2022-44256 is a post-authentication buffer overflow vulnerability in TOTOLINK LR350 V9.3.5u.6369_B20220309 caused by the 'lang' parameter in the setLanguageCfg function.

The Impact of CVE-2022-44256

The vulnerability could be exploited by an authenticated attacker to execute arbitrary code or crash the system, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2022-44256

This section provides technical insights into CVE-2022-44256.

Vulnerability Description

The vulnerability occurs due to improper handling of user-supplied input in the 'lang' parameter, leading to a buffer overflow condition.

Affected Systems and Versions

TOTOLINK LR350 V9.3.5u.6369_B20220309 is confirmed to be affected by this vulnerability.

Exploitation Mechanism

An authenticated attacker can exploit this vulnerability by crafting a malicious request containing a specially-crafted 'lang' parameter value to trigger the buffer overflow.

Mitigation and Prevention

Learn how to protect your systems from CVE-2022-44256.

Immediate Steps to Take

Update the TOTOLINK LR350 firmware to a non-vulnerable version, restrict network access to trusted users only, and monitor for any suspicious activities.

Long-Term Security Practices

Implement secure coding practices, conduct regular security assessments, and educate users on cybersecurity best practices to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security updates released by TOTOLINK and apply patches promptly to mitigate the risk of exploitation.