CVE-2020-7766 Explained : Impact and Mitigation

CVE-2020-7766, also known as Prototype Pollution, affects all versions of the json-ptr package. The vulnerability allows for prototype pollution when the force flag is set to true during the set operation.

Understanding CVE-2020-7766

This CVE involves a vulnerability in the json-ptr package that can lead to prototype pollution.

What is CVE-2020-7766?

CVE-2020-7766 is a security vulnerability in the json-ptr package that arises during the set operation with the force flag set to true, potentially leading to prototype pollution.

The Impact of CVE-2020-7766

The impact of this CVE is rated as HIGH with a CVSS base score of 7.3. It can allow an attacker to manipulate the prototype of objects, leading to security breaches.

Technical Details of CVE-2020-7766

This section provides more technical insights into the vulnerability.

Vulnerability Description

The issue occurs in the set operation of the json-ptr package when the force flag is enabled, allowing for recursive setting of properties without proper key validation, leading to prototype pollution.

Affected Systems and Versions

Package: json-ptr
Versions affected: All versions

Exploitation Mechanism

The vulnerability can be exploited by setting the force flag to true during the set operation, enabling an attacker to manipulate the prototype of objects.

Mitigation and Prevention

Protecting systems from CVE-2020-7766 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the json-ptr package to the latest version that contains a fix for the vulnerability.
Avoid using the force flag with the set operation until the package is patched.

Long-Term Security Practices

Regularly monitor for security updates and patches for the json-ptr package.
Implement input validation and sanitization to prevent similar vulnerabilities.

Patching and Updates

Apply official fixes provided by the json-ptr package maintainers to address the vulnerability.