CVE-2021-22132 : Vulnerability Insights and Analysis

Elasticsearch versions 7.7.0 to 7.10.1 have been found to contain a vulnerability in the async search API, leading to information disclosure. Read on to understand the impact, technical details, and mitigation steps for CVE-2021-22132.

Understanding CVE-2021-22132

This section will provide insights into what CVE-2021-22132 is all about.

What is CVE-2021-22132?

CVE-2021-22132 refers to an information disclosure flaw in Elasticsearch versions 7.7.0 to 7.10.1. Users conducting an async search may unknowingly store HTTP headers, potentially allowing a user with access to the .tasks index to retrieve sensitive request headers of other users in the cluster.

The Impact of CVE-2021-22132

The vulnerability in Elasticsearch versions 7.7.0 to 7.10.1 could result in unauthorized access to sensitive request headers, compromising data confidentiality and potentially leading to data breaches.

Technical Details of CVE-2021-22132

Delve deeper into the technical aspects of CVE-2021-22132.

Vulnerability Description

The flaw arises due to inadequate protection of credentials in the async search API of Elasticsearch versions 7.7.0 to 7.10.1, enabling unauthorized users to access HTTP headers.

Affected Systems and Versions

Elasticsearch versions 7.7.0 to 7.10.1 are impacted by this vulnerability, exposing users to the risk of information disclosure.

Exploitation Mechanism

By executing an async search, users inadvertently store HTTP headers, allowing those with access to the .tasks index to retrieve sensitive request headers.

Mitigation and Prevention

Explore the necessary steps to mitigate the risks associated with CVE-2021-22132.

Immediate Steps to Take

Users are advised to update their Elasticsearch installations to version 7.10.2 or later to eliminate the vulnerability and prevent potential data leaks.

Long-Term Security Practices

Implement robust security measures such as access control and regular security audits to fortify your Elasticsearch deployment against similar vulnerabilities in the future.

Patching and Updates

Stay proactive with regular updates and security patches to ensure your Elasticsearch environment remains secure and resilient against evolving threats.