CVE-2019-0196 Explained : Impact and Mitigation

Researchers discovered a security flaw in versions 2.4.17 to 2.4.38 of the Apache HTTP Server, allowing attackers to exploit http/2 request handling.

Understanding CVE-2019-0196

This CVE involves a vulnerability in the Apache HTTP Server versions 2.4.17 to 2.4.38 that could be exploited by attackers through manipulated network input.

What is CVE-2019-0196?

A security flaw in Apache HTTP Server versions 2.4.17 to 2.4.38 allows attackers to manipulate network input, leading to memory retrieval and incorrect request processing.

The Impact of CVE-2019-0196

The vulnerability enables attackers to exploit the handling of http/2 requests, potentially resulting in the incorrect processing of requests due to memory retrieval.

Technical Details of CVE-2019-0196

Apache HTTP Server versions 2.4.17 to 2.4.38 are affected by this vulnerability.

Vulnerability Description

By manipulating network input, attackers can exploit the handling of http/2 requests, leading to memory retrieval and incorrect request processing.

Affected Systems and Versions

Product: Apache HTTP Server
Vendor: Apache Software Foundation
Versions: 2.4.17 to 2.4.38

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating network input, causing the server to access freed memory during string comparison.

Mitigation and Prevention

To address CVE-2019-0196, follow these steps:

Immediate Steps to Take

Apply security patches provided by Apache Software Foundation.
Monitor for any unusual network activity.
Implement network intrusion detection and prevention systems.

Long-Term Security Practices

Regularly update and patch the Apache HTTP Server.
Conduct security audits and penetration testing.
Stay informed about security advisories and best practices.

Patching and Updates

Ensure that you regularly update the Apache HTTP Server to the latest version to mitigate the CVE-2019-0196 vulnerability.