CVE-2020-7765 : What You Need to Know

This CVE-2020-7765 article provides insights into a vulnerability affecting the package @firebase/util before version 0.3.4, related to Prototype Pollution.

Understanding CVE-2020-7765

This CVE involves a vulnerability in the deepExtend function within the DeepCopy.ts file of the @firebase/util package, potentially allowing attackers to manipulate the object prototype.

What is CVE-2020-7765?

CVE-2020-7765 is a security vulnerability in the @firebase/util package before version 0.3.4, enabling attackers to overwrite and pollute the object prototype.

The Impact of CVE-2020-7765

The impact of this vulnerability is rated as MEDIUM severity with a CVSS base score of 5.6. It requires a high attack complexity and has a proof-of-concept exploit code maturity.

Technical Details of CVE-2020-7765

Vulnerability Description

The vulnerability allows attackers to manipulate the object prototype by exploiting the deepExtend function in the DeepCopy.ts file.

Affected Systems and Versions

Package: @firebase/util
Versions Affected: < 0.3.4

Exploitation Mechanism

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None

Mitigation and Prevention

Immediate Steps to Take

Update the @firebase/util package to version 0.3.4 or higher.
Monitor for any suspicious activities related to object prototype manipulation.

Long-Term Security Practices

Regularly update packages and dependencies to mitigate potential vulnerabilities.
Implement input validation to prevent malicious user input.

Patching and Updates

Apply official fixes and patches provided by the package maintainers to address the vulnerability.