CVE-2020-7774 : Exploit Details and Defense Strategies

CVE-2020-7774, also known as Prototype Pollution, is a vulnerability found in the package y18n before versions 3.2.2, 4.0.1, and 5.0.5. This CVE was published on November 17, 2020, by Snyk.

Understanding CVE-2020-7774

What is CVE-2020-7774?

The package y18n before versions 3.2.2, 4.0.1, and 5.0.5 is susceptible to Prototype Pollution, a type of vulnerability that allows attackers to manipulate the prototype of objects.

The Impact of CVE-2020-7774

Prototype Pollution can lead to various security issues, including data tampering, remote code execution, and denial of service attacks.

Technical Details of CVE-2020-7774

Vulnerability Description

The vulnerability in y18n allows attackers to modify the behavior of JavaScript applications by injecting malicious code through prototype manipulation.

Affected Systems and Versions

Vendor: n/a
Product: y18n
Versions Affected: All versions less than 5.0.5

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious code into the prototype of objects, leading to unauthorized actions within the application.

Mitigation and Prevention

Immediate Steps to Take

Update the y18n package to version 5.0.5 or higher to mitigate the vulnerability.
Monitor for any suspicious activities or unexpected behavior in the application.

Long-Term Security Practices

Regularly update dependencies and packages to ensure the latest security patches are applied.
Implement input validation and sanitization to prevent code injection attacks.

Patching and Updates

Apply patches and updates provided by the package maintainers to address known security issues and vulnerabilities.