CVE-2021-23388 : Security Advisory and Response

A detailed insight into the CVE-2021-23388 vulnerability affecting the 'forms' package versions before 1.2.1 and from 1.3.0 to 1.3.2, leading to Regular Expression Denial of Service (ReDoS) via email validation.

Understanding CVE-2021-20657

This section delves into the impact, technical details, and mitigation strategies for CVE-2021-23388.

What is CVE-2021-23388?

The 'forms' package versions before 1.2.1, from 1.3.0, and before 1.3.2 are susceptible to Regular Expression Denial of Service (ReDoS) through email validation.

The Impact of CVE-2021-23388

The vulnerability poses a medium risk with a base CVSS score of 5.3, allowing an attacker to exploit the package via low attack complexity over a network without requiring user interaction.

Technical Details of CVE-2021-23388

Explore the specific technical aspects of the CVE-2021-23388 vulnerability.

Vulnerability Description

The vulnerability arises due to improper email validation, allowing an attacker to trigger Regular Expression Denial of Service (ReDoS) attacks.

Affected Systems and Versions

'Forms' package versions before 1.2.1 and from 1.3.0 to 1.3.2 are impacted by this vulnerability.

Exploitation Mechanism

Exploitation involves sending malicious inputs to the email validation component, causing excessive computational load and resulting in a denial of service.

Mitigation and Prevention

Discover the steps to mitigate and prevent exploitation of CVE-2021-23388.

Immediate Steps to Take

Update the 'forms' package to versions 1.2.1 or higher to remediate the vulnerability. Monitor for any unusual email validation behavior.

Long-Term Security Practices

Implement secure coding practices, including input validation, to prevent potential ReDoS vulnerabilities in the future.

Patching and Updates

Regularly check for security updates and apply patches promptly to protect systems from known vulnerabilities.