CVE-2017-8700 : What You Need to Know

ASP.NET Core versions 1.0, 1.1, and 2.0 are vulnerable to an information disclosure issue that allows attackers to bypass Cross-origin Resource Sharing (CORS) configurations.

Understanding CVE-2017-8700

This CVE involves a vulnerability in ASP.NET Core versions 1.0, 1.1, and 2.0 that enables attackers to access restricted content from web applications.

What is CVE-2017-8700?

An attacker can exploit a vulnerability in ASP.NET Core versions 1.0, 1.1, and 2.0 to circumvent Cross-origin Resource Sharing (CORS) configurations. This allows them to obtain content from a web application that is typically restricted, known as the 'ASP.NET Core Information Disclosure Vulnerability.'

The Impact of CVE-2017-8700

Attackers can access restricted content from web applications.

Technical Details of CVE-2017-8700

ASP.NET Core versions 1.0, 1.1, and 2.0 are affected by this vulnerability.

Vulnerability Description

Attackers can bypass CORS configurations to retrieve restricted content.

Affected Systems and Versions

Product: ASP.NET Core
Vendor: Microsoft Corporation
Versions: ASP.NET Core 1.0, 1.1, and 2.0

Exploitation Mechanism

Attackers exploit the vulnerability to access restricted content from web applications.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent exploitation of this vulnerability.

Immediate Steps to Take

Apply security patches provided by Microsoft.
Review and update CORS configurations.
Monitor and restrict access to sensitive information.

Long-Term Security Practices

Regularly update and patch software to prevent vulnerabilities.
Implement strong access controls and authentication mechanisms.

Patching and Updates

Microsoft may release patches to address this vulnerability. Stay informed and apply patches promptly.