CVE-2020-5258 : Security Advisory and Response

In affected versions of dojo (NPM package), the deepCopy method is vulnerable to Prototype Pollution. This vulnerability allows attackers to inject properties into JavaScript language construct prototypes, potentially leading to code injection.

Understanding CVE-2020-5258

What is CVE-2020-5258?

CVE-2020-5258 is a security vulnerability in the dojo NPM package that allows for Prototype Pollution, enabling attackers to manipulate object prototypes.

The Impact of CVE-2020-5258

The vulnerability has a CVSS base score of 7.7, indicating a high severity issue with significant confidentiality and integrity impacts.

Technical Details of CVE-2020-5258

Vulnerability Description

The deepCopy method in affected versions of dojo is susceptible to Prototype Pollution, allowing attackers to inject properties into JavaScript object prototypes.

Affected Systems and Versions

Versions < 1.12.8
Versions >= 1.13.0, < 1.13.7
Versions >= 1.14.0, < 1.14.6
Versions >= 1.15.0, < 1.15.3
Versions >= 1.16.0, < 1.16.2

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious values into object prototypes, potentially leading to code injection.

Mitigation and Prevention

Immediate Steps to Take

Update to patched versions 1.12.8, 1.13.7, 1.14.6, 1.15.3, or 1.16.2
Monitor for any unusual behavior in the application

Long-Term Security Practices

Regularly update dependencies to patched versions
Implement input validation to prevent code injection attacks

Patching and Updates

Ensure all affected systems are updated to versions 1.12.8, 1.13.7, 1.14.6, 1.15.3, or 1.16.2 to mitigate the vulnerability.