CVE-2021-23433 : Security Advisory and Response

A detailed overview of CVE-2021-23433 focusing on Prototype Pollution vulnerability in algoliasearch-helper.

Understanding CVE-2021-23433

This CVE relates to the usage of vulnerable versions of algoliasearch-helper prior to 3.6.2, leading to the potential risk of Prototype Pollution.

What is CVE-2021-23433?

The package algoliasearch-helper versions earlier than 3.6.2 are at risk due to the use of the merge function in src/SearchParameters/index.js without protection against prototype properties. This vulnerability can be exploited if users have the ability to define arbitrary search patterns.

The Impact of CVE-2021-23433

With a CVSS base score of 5.9 and a medium severity level, the vulnerability poses a high availability impact, making systems susceptible to attacks via network without requiring privileges.

Technical Details of CVE-2021-23433

Delving into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from the lack of protection against prototype properties in the merge function of algoliasearch-helper affecting versions prior to 3.6.2.

Affected Systems and Versions

Systems utilizing algoliasearch-helper versions less than 3.6.2 are impacted by this vulnerability.

Exploitation Mechanism

Exploitation is possible when users are allowed to define custom search patterns, enabling threat actors to perform Prototype Pollution attacks.

Mitigation and Prevention

Guidelines to address and prevent the risks associated with CVE-2021-23433.

Immediate Steps to Take

Users are advised to update algoliasearch-helper to version 3.6.2 or above to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices and regularly updating dependencies can bolster the overall security posture.

Patching and Updates

Stay informed about security patches released by the vendor and promptly apply them to safeguard systems from potential threats.