CVE-2023-3997 : Vulnerability Insights and Analysis

This CVE record pertains to a vulnerability assigned CVE-2023-3997 that was published on July 31, 2023, by Splunk. The vulnerability affects Splunk SOAR versions lower than 6.1.0, leading to potential log file poisoning and possible malicious code execution through crafted web requests containing special ANSI characters.

Understanding CVE-2023-3997

This section delves into the details of the CVE-2023-3997 vulnerability affecting Splunk SOAR versions.

What is CVE-2023-3997?

CVE-2023-3997 is an unauthenticated log injection vulnerability in Splunk SOAR, where versions less than 6.1.0 are indirectly impacted. An attacker can exploit this vulnerability by sending maliciously crafted web requests containing specific ANSI characters, leading to log file poisoning and potential malicious code execution when viewed by a terminal user.

The Impact of CVE-2023-3997

The impact of CVE-2023-3997 is rated as high, with a CVSS v3.1 base score of 8.6 (High severity). This vulnerability can be leveraged by threat actors to tamper with logs and execute malicious code through the targeted user's terminal actions.

Technical Details of CVE-2023-3997

In this section, we explore the technical aspects and implications of the CVE-2023-3997 vulnerability in Splunk SOAR.

Vulnerability Description

The vulnerability arises due to Splunk SOAR's inability to handle output that is written to logs correctly, making it susceptible to log file poisoning through specially crafted web requests.

Affected Systems and Versions

Splunk SOAR (On-premises) and Splunk SOAR (Cloud) versions lower than 6.1.0 are impacted by this vulnerability.

Exploitation Mechanism

Exploiting this vulnerability involves sending manipulated web requests with ANSI characters to trigger log file poisoning, potentially leading to unauthorized code execution.

Mitigation and Prevention

To mitigate the risks associated with CVE-2023-3997, it is crucial to take immediate action and implement necessary security measures.

Immediate Steps to Take

Upgrade Splunk SOAR to version 6.1.0 or higher to address the vulnerability.
Monitor and restrict access to terminal sessions to prevent unauthorized actions.

Long-Term Security Practices

Conduct regular security assessments and penetration testing to identify and mitigate vulnerabilities proactively.
Educate terminal users on best practices to avoid falling victim to malicious exploitation.

Patching and Updates

Stay informed about security advisories from Splunk and promptly apply patches and updates to ensure a secure environment and prevent exploitation of known vulnerabilities.