CVE-2021-20659 : Exploit Details and Defense Strategies

SolarView Compact SV-CPT-MC310 prior to Ver.6.5, developed by Contec Co., Ltd., is affected by a critical vulnerability that allows an authenticated attacker to upload arbitrary files through unspecified vectors. This could lead to remote code execution if the uploaded file is a PHP script.

Understanding CVE-2021-20659

SolarView Compact SV-CPT-MC310 is vulnerable to an unrestricted file upload issue, enabling an attacker to execute arbitrary code.

What is CVE-2021-20659?

The CVE-2021-20659 vulnerability in SolarView Compact SV-CPT-MC310 prior to Ver.6.5 permits authenticated attackers to upload any file, potentially resulting in the execution of malicious PHP scripts.

The Impact of CVE-2021-20659

This security flaw could allow threat actors to compromise the affected system, leading to unauthorized access, data theft, or complete system takeover.

Technical Details of CVE-2021-20659

The technical specifics of this CVE include:

Vulnerability Description

An attacker with authentication can upload files leveraging unidentified vectors, potentially executing arbitrary code.

Affected Systems and Versions

SolarView Compact SV-CPT-MC310 versions prior to Ver.6.5 are impacted by this vulnerability.

Exploitation Mechanism

The vulnerability is exploited by authenticated attackers uploading files, particularly PHP scripts, through unspecified means.

Mitigation and Prevention

To address CVE-2021-20659, consider the following mitigation strategies:

Immediate Steps to Take

Upgrade SolarView Compact SV-CPT-MC310 to version 6.5 or later.
Restrict access to the application to authorized users only.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Implement access controls and strong authentication mechanisms.

Patching and Updates

Stay informed about security advisories from Contec Co., Ltd. and apply relevant patches and updates without delay.