CVE-2020-35669 : Exploit Details and Defense Strategies

An issue was discovered in the http package through 0.12.2 for Dart, allowing for CRLF injection in an HTTP request.

Understanding CVE-2020-35669

This CVE identifies a vulnerability in the Dart http package that could be exploited for CRLF injection in HTTP requests.

What is CVE-2020-35669?

The vulnerability in the http package through version 0.12.2 for Dart enables attackers to manipulate the HTTP method, potentially leading to CRLF injection in HTTP requests.

The Impact of CVE-2020-35669

The exploitation of this vulnerability could result in unauthorized manipulation of HTTP requests, potentially leading to various attacks such as response splitting.

Technical Details of CVE-2020-35669

This section provides technical details about the vulnerability.

Vulnerability Description

The issue allows attackers to control the HTTP method, potentially enabling CRLF injection in HTTP requests when the app uses Request directly.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Versions affected: up to 0.12.2

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the HTTP method when the application uses Request directly, allowing for CRLF injection in HTTP requests.

Mitigation and Prevention

Protecting systems from CVE-2020-35669 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update the Dart http package to a version beyond 0.12.2 to mitigate the vulnerability.
Avoid directly using Request in the application to reduce the risk of exploitation.

Long-Term Security Practices

Implement input validation to prevent malicious input from reaching the HTTP requests.
Regularly monitor and update dependencies to address known vulnerabilities.

Patching and Updates

Stay informed about security updates for the Dart http package and apply patches promptly to secure the application.