CVE-2018-3720 : What You Need to Know

Version 0.4.7 or earlier of the assign-deep node module has a vulnerability known as Modification of Assumed-Immutable Data (MAID). This vulnerability enables a malicious user to alter the prototype of "Object" by exploiting the proto property. As a result, the user can add or modify a property that will be present in all objects.

Understanding CVE-2018-3720

This CVE involves a vulnerability in the assign-deep node module that allows unauthorized modification of assumed-immutable data.

What is CVE-2018-3720?

CVE-2018-3720 is a vulnerability in versions before 0.4.7 of the assign-deep node module that permits an attacker to manipulate the prototype of "Object" using the proto property.

The Impact of CVE-2018-3720

The vulnerability allows a malicious user to add or modify a property that affects all objects, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2018-3720

The technical aspects of the CVE-2018-3720 vulnerability are as follows:

Vulnerability Description

The vulnerability, known as Modification of Assumed-Immutable Data (MAID), enables unauthorized modification of the prototype of "Object" through the proto property.

Affected Systems and Versions

Product: assign-deep node module
Vendor: HackerOne
Vulnerable Versions: Versions before 0.4.7

Exploitation Mechanism

The vulnerability can be exploited by manipulating the proto property to alter the prototype of "Object" and introduce unauthorized changes to properties across all objects.

Mitigation and Prevention

To address CVE-2018-3720, consider the following mitigation strategies:

Immediate Steps to Take

Update the assign-deep node module to version 0.4.7 or later to eliminate the vulnerability.
Monitor for any unauthorized changes to object properties.

Long-Term Security Practices

Regularly review and update dependencies to ensure the latest secure versions are in use.
Implement code reviews and security testing to identify and address vulnerabilities proactively.

Patching and Updates

Apply patches and updates promptly to address known vulnerabilities and enhance system security.