CVE-2021-42139 : Exploit Details and Defense Strategies

Deno Standard Modules before 0.107.0 allow Code Injection via an untrusted YAML file in certain configurations.

Understanding CVE-2021-42139

Deno Standard Modules are vulnerable to code injection through untrusted YAML files, presenting a security risk that needs immediate attention.

What is CVE-2021-42139?

CVE-2021-42139 details a vulnerability in Deno Standard Modules prior to version 0.107.0 that enables code injection by exploiting untrusted YAML files in specific setups.

The Impact of CVE-2021-42139

This vulnerability allows attackers to inject malicious code through YAML files, potentially leading to unauthorized actions and data breaches within affected systems.

Technical Details of CVE-2021-42139

Dive deeper into the technical aspects of this vulnerability to understand its implications and scope.

Vulnerability Description

The flaw in Deno Standard Modules before 0.107.0 permits code injection, posing a significant security risk for systems using these modules.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: All versions before 0.107.0 are affected

Exploitation Mechanism

The vulnerability is exploited by executing malicious code through YAML files, taking advantage of specific configurations within Deno Standard Modules.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks associated with CVE-2021-42139.

Immediate Steps to Take

Update Deno Standard Modules to version 0.107.0 or newer to patch the code injection vulnerability
Avoid processing untrusted YAML files until the modules are securely updated

Long-Term Security Practices

Implement input validation mechanisms to prevent code injection attacks
Regularly monitor for security advisories and follow best practices for secure coding

Patching and Updates

Stay informed about security patches and updates for Deno Standard Modules to address any new vulnerabilities promptly