CVE-2021-23702 : Vulnerability Insights and Analysis

A detailed overview of CVE-2021-23702 focusing on the vulnerability in the package object-extend version 0.0.0 leading to Prototype Pollution via object-extend.

Understanding CVE-2021-23702

CVE-2021-23702 is a security vulnerability found in the package object-extend version 0.0.0, identified by Feng Xiao on February 18, 2022, via object-extend, leading to Prototype Pollution.

What is CVE-2021-23702?

The package object-extend version 0.0.0 is susceptible to Prototype Pollution through object-extend, posing a high severity risk.

The Impact of CVE-2021-23702

With a CVSS base score of 7.6 and high severity level, this vulnerability allows attackers to manipulate prototypes, potentially leading to data corruption, information leaks, or remote code execution.

Technical Details of CVE-2021-23702

Exploring the specifics of the CVE-2021-23702 vulnerability.

Vulnerability Description

CVE-2021-23702 involves a Prototype Pollution vulnerability in the object-extend package version 0.0.0, enabling malicious actors to modify prototype objects.

Affected Systems and Versions

The vulnerability affects systems using object-extend version 0.0.0, with the exploitability status marked as 'affected'.

Exploitation Mechanism

Exploitation of this vulnerability requires low attack complexity and privileges, with proof-of-concept exploit code available.

Mitigation and Prevention

Best practices to mitigate and prevent exploitation of CVE-2021-23702.

Immediate Steps to Take

Upgrade to a non-vulnerable version of object-extend or remove the dependency if not required.
Monitor for any suspicious activities that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch dependencies to avoid known vulnerabilities.
Implement security mechanisms to prevent and detect Prototype Pollution attacks.

Patching and Updates

Stay informed about security advisories and updates related to object-extend to address vulnerabilities promptly.