CVE-2022-29393 : Security Advisory and Response

TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a stack overflow vulnerability via the comment parameter in the function FUN_004192cc.

Understanding CVE-2022-29393

This vulnerability affects TOTOLINK N600R V4.3.0cu.7647_B20210106 and can be exploited through the comment parameter in a specific function.

What is CVE-2022-29393?

CVE-2022-29393 is a stack overflow vulnerability found in the TOTOLINK N600R V4.3.0cu.7647_B20210106 router, specifically in the function FUN_004192cc.

The Impact of CVE-2022-29393

Exploitation of this vulnerability could lead to a denial of service (DoS) condition or potentially remote code execution on the affected device.

Technical Details of CVE-2022-29393

The technical details involve a stack overflow issue triggered by unbounded user input passed through the comment parameter, which can overwrite the stack memory.

Vulnerability Description

The vulnerability allows an attacker to craft malicious input that overflows the stack, leading to potential control over the execution flow.

Affected Systems and Versions

TOTOLINK N600R V4.3.0cu.7647_B20210106 is identified as the affected system running the vulnerable firmware.

Exploitation Mechanism

By sending a specially crafted input through the comment parameter, an attacker can trigger the overflow and execute arbitrary code.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2022-29393.

Immediate Steps to Take

Update the firmware of the TOTOLINK N600R router to a patched version provided by the vendor.

Long-Term Security Practices

Regularly monitor for security updates and patches released by the vendor to protect against known vulnerabilities.

Patching and Updates

Stay informed about security advisories and apply patches promptly to ensure the security of the router and prevent potential exploitation.