CVE-2021-31402 : Vulnerability Insights and Analysis

A detailed analysis of CVE-2021-31402 focusing on the dio package 4.0.0 vulnerability in Dart that allows CRLF injection.

Understanding CVE-2021-31402

This section provides insights into the nature and impact of the security vulnerability.

What is CVE-2021-31402?

The dio package 4.0.0 for Dart is susceptible to CRLF injection, potentially leading to manipulation of the HTTP method string.

The Impact of CVE-2021-31402

The vulnerability can be exploited by attackers who control the HTTP method string, posing a risk to the integrity of the affected systems.

Technical Details of CVE-2021-31402

Explore the specifics of the vulnerability, including affected systems and exploitation mechanisms.

Vulnerability Description

The issue arises from inadequate input validation in handling HTTP method strings, creating a pathway for CRLF injection.

Affected Systems and Versions

The dio package version 4.0.0 for Dart is confirmed to be affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this flaw by manipulating the HTTP method string, enabling CRLF injection.

Mitigation and Prevention

Discover the necessary steps to mitigate the risks associated with CVE-2021-31402.

Immediate Steps to Take

Users are advised to update the dio package to a non-vulnerable version or implement additional input sanitization measures.

Long-Term Security Practices

Establish robust input validation procedures and stay informed about security patches and updates for the dio package.

Patching and Updates

Keep the Dart environment secure by promptly applying patches and updates released by the package maintainers.