CVE-2022-43564 : Exploit Details and Defense Strategies

This article discusses the CVE-2022-43564 vulnerability identified in Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, allowing a remote user to conduct a denial of service attack. Learn about the impact, technical details, and mitigation strategies.

Understanding CVE-2022-43564

CVE-2022-43564 is a vulnerability in Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2 that enables a remote user to exploit search macros, leading to a denial of service.

What is CVE-2022-43564?

In Splunk Enterprise versions below 8.1.12, 8.2.9, and 9.0.2, a remote user with the ability to create search macros and schedule search reports can trigger a denial of service by utilizing specially crafted search macros.

The Impact of CVE-2022-43564

The vulnerability poses a medium severity risk with a CVSS base score of 4.9. It can have a high availability impact, allowing an attacker to disrupt the normal operation of affected systems.

Technical Details of CVE-2022-43564

The vulnerability stems from uncontrolled resource consumption in Splunk Enterprise, making it susceptible to denial of service attacks. Below are the key technical details:

Vulnerability Description

A remote attacker, by crafting malicious search macros, can exploit the flaw in Splunk Enterprise versions, causing a denial of service condition.

Affected Systems and Versions

Splunk Enterprise versions 8.1.12, 8.2.9, and 9.0.2 are affected by this vulnerability.

Exploitation Mechanism

The exploitation involves the creation of search macros and scheduling search reports by a remote user to trigger the denial of service.

Mitigation and Prevention

To address CVE-2022-43564, follow these best practices:

Immediate Steps to Take

Update Splunk Enterprise to version 8.1.12, 8.2.9, or 9.0.2 to mitigate the vulnerability.
Restrict access to the creation of search macros and scheduling privileges.

Long-Term Security Practices

Regularly monitor security advisories from Splunk to stay informed about patches and updates.
Conduct security training for users to recognize and report suspicious activities.

Patching and Updates

Stay informed about security updates by visiting Splunk's security advisories page.