CVE-2021-26616 Explained : Impact and Mitigation

An OS command injection vulnerability was discovered in SecuwaySSL, affecting the SecuwaySSL U V2.0 client for MacOS by secuwiz co., ltd. This vulnerability could be exploited by injecting special characters in execute command with runCommand arguments.

Understanding CVE-2021-26616

This section will provide insights into the vulnerability, its impact, technical details, and mitigation steps.

What is CVE-2021-26616?

The CVE-2021-26616, also known as the SecuwaySSL OS command injection vulnerability, involves a flaw that allows threat actors to execute arbitrary commands on the affected system through an injected command.

The Impact of CVE-2021-26616

The vulnerability's impact is rated as high, with a CVSS v3.1 base score of 7.8. It affects confidentiality, integrity, and availability, posing a significant risk to affected systems and user data.

Technical Details of CVE-2021-26616

This section covers the specific technical aspects of the vulnerability, including its description, affected systems, versions, and exploitation mechanism.

Vulnerability Description

The vulnerability stems from improper input validation, enabling malicious actors to execute unauthorized OS commands using specially crafted inputs.

Affected Systems and Versions

SecuwaySSL U V2.0 client for MacOS version 2.0.0.4 and below are affected by this vulnerability, potentially exposing users of these versions to exploitation.

Exploitation Mechanism

Threat actors can exploit this vulnerability by injecting special characters into the execute command with runCommand arguments, allowing them to run arbitrary commands on the targeted system.

Mitigation and Prevention

To address CVE-2021-26616, immediate actions and long-term security practices should be implemented to protect systems and data from potential exploits.

Immediate Steps to Take

Users are advised to update SecuwaySSL to a secure version, apply patches provided by the vendor, and avoid executing commands from untrusted sources.

Long-Term Security Practices

Implement strict input validation, conduct regular security audits, educate users on secure practices, and monitor system logs for suspicious activities to enhance overall security posture.

Patching and Updates

Ensure that the SecuwaySSL U V2.0 client for MacOS is regularly updated with the latest patches and security fixes to mitigate the risk associated with CVE-2021-26616.