CVE-2018-12537 : Vulnerability Insights and Analysis

Eclipse Vert.x version 3.0 to 3.5.1 is affected by a vulnerability allowing unfiltered values to inject new headers in client requests or server responses due to improper filtering of carriage return and line feed characters.

Understanding CVE-2018-12537

This CVE involves a CRLF Injection vulnerability in Eclipse Vert.x.

What is CVE-2018-12537?

CVE-2018-12537 is a security flaw in Eclipse Vert.x versions 3.0 to 3.5.1 that enables the injection of new headers in HTTP requests and responses.

The Impact of CVE-2018-12537

The vulnerability allows malicious actors to manipulate headers, potentially leading to various attacks like request smuggling or response splitting.

Technical Details of CVE-2018-12537

This section provides in-depth technical insights into the CVE.

Vulnerability Description

The issue arises from the HttpServer response headers and HttpClient request headers not properly filtering out CRLF characters, enabling header injection.

Affected Systems and Versions

Product: Eclipse Vert.x
Vendor: The Eclipse Foundation
Versions: 3.0 to 3.5.1

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious headers containing CRLF sequences, leading to unauthorized actions.

Mitigation and Prevention

Protect your systems from CVE-2018-12537 with the following measures.

Immediate Steps to Take

Apply patches or updates provided by Eclipse Foundation.
Monitor and filter input to prevent malicious header injections.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement strict input validation to prevent header manipulation.

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the risk of header injection attacks.