CVE-2023-22943 : Security Advisory and Response

This CVE record was assigned by Splunk and published on February 14, 2023. It pertains to vulnerabilities found in Splunk Add-on Builder (AoB) versions below 4.1.2 and Splunk CloudConnect SDK versions below 3.1.3. The issue arises when requests to third-party APIs through the REST API Modular Input incorrectly revert to using HTTP after a failure to connect over HTTPS in these versions.

Understanding CVE-2023-22943

This section will delve into the details of CVE-2023-22943, its impact, technical description, affected systems and versions, exploitation mechanism, and mitigation strategies.

What is CVE-2023-22943?

CVE-2023-22943 highlights a vulnerability in Splunk Add-on Builder and Splunk CloudConnect SDK that causes requests to third-party APIs through the REST API Modular Input to fallback to using HTTP if a connection failure over HTTPS is encountered.

The Impact of CVE-2023-22943

The impact of this vulnerability is rated as MEDIUM with a CVSS v3.1 base score of 4.8. It could lead to compromising the confidentiality and integrity of the data being transmitted over insecure HTTP connections.

Technical Details of CVE-2023-22943

In this section, we will explore the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability allows requests to third-party APIs in Splunk Add-on Builder and Splunk CloudConnect SDK to revert to using HTTP after failed attempts to connect over HTTPS, potentially exposing sensitive data.

Affected Systems and Versions

The impacted products include Splunk Add-on Builder versions below 4.1.2 and Splunk CloudConnect SDK versions below 3.1.3.

Exploitation Mechanism

Attackers could exploit this vulnerability by intercepting traffic and forcing the connection to revert to HTTP, thereby gaining access to sensitive information transmitted over the insecure channel.

Mitigation and Prevention

This section covers immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Users are advised to upgrade Splunk Add-on Builder to version 4.1.2 or higher and Splunk CloudConnect SDK to version 3.1.3 or higher to mitigate the vulnerability. Additionally, reviewing network configurations to ensure secure connections to third-party APIs is recommended.

Long-Term Security Practices

Implementing secure coding practices, regularly monitoring network traffic for anomalies, and maintaining up-to-date security protocols are essential for preventing similar vulnerabilities in the future.

Patching and Updates

Regularly checking for security updates and promptly applying patches provided by Splunk for the affected products is crucial in maintaining a secure environment and preventing potential exploitation of known vulnerabilities.