CVE-2022-29641 Explained : Impact and Mitigation

TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were found to have a stack overflow vulnerability, allowing for Denial of Service (DoS) attacks through a crafted POST request.

Understanding CVE-2022-29641

This CVE identifies a specific vulnerability present in TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 routers.

What is CVE-2022-29641?

CVE-2022-29641 highlights a stack overflow issue triggered by the startTime and endTime parameters within the setParentalRules function, opening avenues for DoS attacks.

The Impact of CVE-2022-29641

The vulnerability in the affected TOTOLINK routers allows malicious actors to exploit the flaw and disrupt services by sending malicious POST requests.

Technical Details of CVE-2022-29641

Understand the specifics of the vulnerability affecting the TOTOLINK routers.

Vulnerability Description

The flaw lies in the incorrect handling of parameters in the setParentalRules function, enabling a stack overflow when processing crafted input.

Affected Systems and Versions

TOTOLINK A3100R routers with versions V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 are vulnerable to this specific issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specially crafted POST requests containing malicious data to trigger the stack overflow.

Mitigation and Prevention

Discover the steps to mitigate the risks associated with CVE-2022-29641.

Immediate Steps to Take

Users of the affected TOTOLINK A3100R routers should apply patches provided by the vendor and consider implementing network-level protections.

Long-Term Security Practices

To enhance security posture, it is recommended to keep systems updated, employ network monitoring solutions, and follow security best practices.

Patching and Updates

Regularly check for firmware updates from TOTOLINK to ensure that your devices are protected against known vulnerabilities.