CVE-2023-25826 Explained : Impact and Mitigation

This CVE, assigned by SNPS, was published on May 3, 2023, and affects OpenTSDB, specifically versions less than or equal to 2.4.1. The vulnerability allows for remote code execution due to insufficient validation of parameters passed to the legacy HTTP query API.

Understanding CVE-2023-25826

This section delves into the details of the CVE, its impact, technical aspects, and mitigation strategies.

What is CVE-2023-25826?

The vulnerability in OpenTSDB stems from insufficient parameter validation in the legacy HTTP query API, enabling the injection of crafted OS commands. This can lead to the execution of malicious code on the host system.

The Impact of CVE-2023-25826

The impact of this vulnerability is significant, as it allows attackers to execute arbitrary OS commands on the affected OpenTSDB system. This could result in unauthorized access, data theft, and system disruption.

Technical Details of CVE-2023-25826

Understanding the technical aspects of the CVE is crucial to comprehensively address the security issue.

Vulnerability Description

The vulnerability arises from incomplete regex validation in the query API, which fails to adequately restrict input, enabling malicious commands to bypass validation checks.

Affected Systems and Versions

OpenTSDB versions up to and including 2.4.1 are susceptible to this remote code execution vulnerability due to insufficient parameter validation in the HTTP query API.

Exploitation Mechanism

By crafting and injecting OS commands into vulnerable parameters of the legacy HTTP query API, threat actors can execute unauthorized code on the OpenTSDB host system.

Mitigation and Prevention

Protecting systems from CVE-2023-25826 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update OpenTSDB to a non-vulnerable version or apply relevant patches provided by the vendor.
Restrict network access to vulnerable systems and monitor for suspicious activity.

Long-Term Security Practices

Implement secure coding practices to validate and sanitize user input to prevent command injections.
Regularly update and patch software to address known vulnerabilities promptly.

Patching and Updates

Stay informed about security updates and patches released by OpenTSDB to address CVE-2023-25826. Regularly apply these updates to ensure the system's security integrity.