CVE-2017-16040 : What You Need to Know

The gfe-sass library is susceptible to potential MITM attacks due to retrieving resources over HTTP, which could lead to remote code execution (RCE) by substituting requested resources.

Understanding CVE-2017-16040

The gfe-sass library has a security vulnerability that could allow attackers to perform remote code execution.

What is CVE-2017-16040?

The gfe-sass library, designed for handling promises using CommonJS/Promises/A,B,D, is vulnerable to MITM attacks when retrieving resources over HTTP.

The Impact of CVE-2017-16040

Attackers can potentially execute remote code by replacing requested resources with malicious versions.

Technical Details of CVE-2017-16040

The technical aspects of the vulnerability are as follows:

Vulnerability Description

The vulnerability stems from gfe-sass downloading resources over HTTP, making it susceptible to MITM attacks.

Affected Systems and Versions

Product: gfe-sass node module
Vendor: HackerOne
Affected Versions: All versions

Exploitation Mechanism

Attackers can exploit the vulnerability by intercepting the HTTP requests and substituting the requested resources with malicious ones.

Mitigation and Prevention

Protect your systems from CVE-2017-16040 with the following measures:

Immediate Steps to Take

Avoid using gfe-sass in environments where HTTP resources are accessed.
Implement HTTPS to encrypt communication and prevent MITM attacks.

Long-Term Security Practices

Regularly update gfe-sass to patched versions that address the vulnerability.
Conduct security audits to identify and mitigate similar vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches to secure your systems.