CVE-2020-11079 : Exploit Details and Defense Strategies

A vulnerability in the node-dns-sync npm module allows for the execution of arbitrary commands, potentially leading to remote code execution. The issue affects versions up to 0.2.0.

Understanding CVE-2020-11079

This CVE involves a command injection vulnerability in the node-dns-sync npm module.

What is CVE-2020-11079?

The vulnerability in node-dns-sync (npm module dns-sync) up to version 0.2.0 permits the execution of arbitrary commands, posing a risk of remote code execution if untrusted input is provided.

The Impact of CVE-2020-11079

The vulnerability has a CVSS base score of 8.6, indicating a high severity level. It has a low attack complexity and requires no privileges, with a potential integrity impact.

Technical Details of CVE-2020-11079

This section provides more technical insights into the CVE.

Vulnerability Description

The vulnerability allows for the execution of arbitrary commands in the node-dns-sync npm module.

Affected Systems and Versions

Product: node-dns-sync
Vendor: skoranga
Versions Affected: < 0.2.1

Exploitation Mechanism

The issue arises when a client of the library calls the vulnerable method with untrusted input, enabling the execution of arbitrary commands.

Mitigation and Prevention

Protecting systems from CVE-2020-11079 requires immediate actions and long-term security practices.

Immediate Steps to Take

Upgrade node-dns-sync to version 0.2.1, where the issue has been fixed.
Avoid providing untrusted input to the vulnerable method.

Long-Term Security Practices

Regularly update npm modules to the latest secure versions.
Implement input validation mechanisms to prevent command injection vulnerabilities.

Patching and Updates

Ensure timely patching of vulnerable npm modules and stay informed about security advisories and updates.