CVE-2022-21698 : Security Advisory and Response
Understand the impact of CVE-2022-21698, an uncontrolled resource consumption vulnerability in promhttp package of client_golang, and learn how to mitigate the risks effectively.
This article provides insights into CVE-2022-21698, an uncontrolled resource consumption vulnerability in the promhttp package of client_golang in Prometheus.
Understanding CVE-2022-21698
This section delves into the details of the CVE-2022-21698 vulnerability within the promhttp package in client_golang, impacting versions prior to 1.11.1.
What is CVE-2022-21698?
The CVE-2022-21698 vulnerability in promhttp allows for a Denial of Service attack due to unbounded cardinality, potentially leading to memory exhaustion when processing requests with non-standard HTTP methods.
The Impact of CVE-2022-21698
The impact of CVE-2022-21698 is significant, as it affects the HTTP server in client_golang, posing risks of service disruption and memory consumption issues on systems running vulnerable versions.
Technical Details of CVE-2022-21698
This section provides a detailed overview of the technical aspects of CVE-2022-21698, including vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability in promhttp arises from improper handling of non-standard HTTP methods, leading to potential Denial of Service conditions and memory exhaustion.
Affected Systems and Versions
Client_golang versions prior to 1.11.1 are affected by CVE-2022-21698, leaving systems utilizing promhttp at risk of exploitation.
Exploitation Mechanism
Exploiting CVE-2022-21698 involves sending requests with non-standard HTTP methods to the HTTP server, triggering unbounded cardinality and potential memory depletion.
Mitigation and Prevention
This section outlines the necessary steps to mitigate and prevent exploitation of CVE-2022-21698, ensuring the security of systems running client_golang.
Immediate Steps to Take
Immediate actions include updating to version 1.11.1 of client_golang, implementing workarounds such as removing problematic labels, or deploying reverse proxies for filtering.
Long-Term Security Practices
Establishing robust security practices, such as regular vulnerability assessments and comprehensive access control measures, can prevent similar vulnerabilities in the future.
Patching and Updates
Regularly monitoring for security updates from Prometheus and promptly applying patches is crucial in safeguarding systems against known vulnerabilities.