CVE-2020-26301 Explained : Impact and Mitigation

ssh2 is client and server modules written in pure JavaScript for node.js. In ssh2 before version 1.4.0, there is a command injection vulnerability that exists only on Windows. This vulnerability may lead to remote code execution if untrusted input is provided to a vulnerable method. The issue has been addressed in version 1.4.0.

Understanding CVE-2020-26301

This CVE involves a command injection vulnerability in the ssh2 module before version 1.4.0.

What is CVE-2020-26301?

CVE-2020-26301 is a vulnerability in the ssh2 module that allows for command injection, potentially leading to remote code execution on Windows systems.

The Impact of CVE-2020-26301

The vulnerability has a CVSS base score of 7.5, indicating a high severity issue with a high impact on confidentiality and a lower impact on integrity. The attack complexity is high, and it can be exploited over a network without requiring privileges.

Technical Details of CVE-2020-26301

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability in ssh2 before version 1.4.0 allows for command injection, specifically on Windows systems.

Affected Systems and Versions

Product: ssh2
Vendor: mscdex
Versions Affected: < 1.4.0

Exploitation Mechanism

The vulnerability can be exploited by providing untrusted input to a specific method in the ssh2 module.

Mitigation and Prevention

To address and prevent exploitation of CVE-2020-26301, follow these steps:

Immediate Steps to Take

Update ssh2 to version 1.4.0 or later to mitigate the vulnerability.
Avoid passing untrusted input to vulnerable methods in the ssh2 module.

Long-Term Security Practices

Regularly update software and dependencies to the latest secure versions.
Implement input validation and sanitization to prevent command injection vulnerabilities.

Patching and Updates

Stay informed about security advisories and patches related to the ssh2 module.