CVE-2021-26606 Explained : Impact and Mitigation

A vulnerability in PKI Security Solution of Dream Security could allow arbitrary command execution due to insufficient validation of the authorization certificate. An attacker could remotely execute arbitrary code on a target system.

Understanding CVE-2021-26606

This CVE relates to a buffer overflow vulnerability in the MagicLine4NX.exe product by Dream Security Co.,Ltd, affecting versions less than 1.0.0.18.

What is CVE-2021-26606?

The vulnerability in the PKI Security Solution of Dream Security allows attackers to execute arbitrary commands remotely by exploiting insufficient authorization certificate validation.

The Impact of CVE-2021-26606

With a CVSS base score of 9.8, this critical vulnerability poses a high risk to confidentiality, integrity, and availability as attackers can execute arbitrary code without needing any privileges or user interaction.

Technical Details of CVE-2021-26606

The vulnerability involves a buffer overflow in the MagicLine4NX.exe product, allowing attackers to craft HTTP requests to execute arbitrary code on affected systems.

Vulnerability Description

The flaw arises from improper validation of authorization certificates, enabling attackers to remotely execute malicious commands on vulnerable systems.

Affected Systems and Versions

The vulnerability affects Windows systems running the MagicLine4NX.exe product with versions less than 1.0.0.18.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending specifically crafted HTTP requests to the affected program, leading to the execution of arbitrary code on the target system.

Mitigation and Prevention

To mitigate this vulnerability:

Immediate Steps to Take

Update the MagicLine4NX.exe software to version 1.0.0.18 or higher to prevent exploitation.

Long-Term Security Practices

Implement strong input validation mechanisms to prevent buffer overflows and arbitrary code execution.

Patching and Updates

Regularly apply software patches and updates to address security vulnerabilities and protect against potential exploits.