CVE-2021-22143 : Security Advisory and Response

A detailed guide on CVE-2021-22143, an information disclosure vulnerability affecting Elastic APM .NET Agent.

Understanding CVE-2021-22143

This section covers the impact and technical details of the CVE-2021-22143 vulnerability.

What is CVE-2021-22143?

The Elastic APM .NET Agent is susceptible to leaking sensitive HTTP header information during application errors, potentially exposing confidential data to unauthorized actors.

The Impact of CVE-2021-22143

This vulnerability can lead to exposure of sensitive information to unauthorized actors, compromising the confidentiality of data.

Technical Details of CVE-2021-22143

Explore the specific details of the CVE-2021-22143 vulnerability.

Vulnerability Description

The Elastic APM .NET Agent fails to properly sanitize sensitive HTTP header details during application errors, leading to potential data leakage.

Affected Systems and Versions

The vulnerability affects Elastic APM .NET Agent versions prior to 1.10.0, with version 1.0.0 being confirmed as affected.

Exploitation Mechanism

During an application error, the headers may not be sanitized before being sent, enabling threat actors to access sensitive HTTP header information.

Mitigation and Prevention

Learn how to mitigate the risks posed by CVE-2021-22143 and prevent potential exploitation.

Immediate Steps to Take

Immediately update Elastic APM .NET Agent to version 1.10.0 or higher to address the vulnerability and prevent information disclosure.

Long-Term Security Practices

Implement secure coding practices, regular security audits, and monitoring to enhance overall system security and prevent similar vulnerabilities.

Patching and Updates

Stay informed about security updates from Elastic and apply patches promptly to safeguard your systems against known vulnerabilities.