CVE-2023-34343 : Security Advisory and Response

This article provides detailed information about CVE-2023-34343, a vulnerability found in the AMI BMC SPX REST API, allowing attackers to inject arbitrary shell commands with high severity impacts.

Understanding CVE-2023-34343

CVE-2023-34343 is a vulnerability affecting the MegaRAC_SPx product by AMI on the ARM platform, specifically versions 12.0 and 13.0, leading to code execution, denial of service, information disclosure, and data tampering.

What is CVE-2023-34343?

CVE-2023-34343 is a security flaw in the AMI BMC SPX REST API that permits attackers with necessary privileges to inject malicious shell commands, potentially resulting in severe consequences like code execution, denial of service, and information exposure.

The Impact of CVE-2023-34343

The vulnerability's impact includes code execution, denial of service, information disclosure, and data tampering, with a CVSS v3.1 score of 7.2 (High severity), affecting the confidentiality, integrity, and availability of systems.

Technical Details of CVE-2023-34343

The CVE-2023-34343 vulnerability, identified by the NVIDIA Offensive Security Research team, is caused by improper neutralization of special elements in OS command injection (CWE-78), enabling attackers to run arbitrary shell commands.

Vulnerability Description

The vulnerability in the SPX REST API of AMI BMC allows attackers to execute code, disrupt services, access sensitive data, and manipulate information through the injection of malicious shell commands.

Affected Systems and Versions

MegaRAC_SPx by AMI on the ARM platform is impacted by CVE-2023-34343, specifically versions 12.0 and 13.0, where an attacker with privileges can exploit the vulnerability.

Exploitation Mechanism

By injecting arbitrary shell commands through the SPX REST API, attackers can achieve code execution, denial of service, information disclosure, or data tampering, exploiting the vulnerability's security gap.

Mitigation and Prevention

To address CVE-2023-34343, immediate actions include applying updates released by AMI, monitoring system activities, and implementing security best practices to prevent similar vulnerabilities.

Immediate Steps to Take

Organizations should promptly apply patches provided by AMI, restrict access to vulnerable APIs, and conduct security assessments to detect and mitigate possible exploitation attempts.

Long-Term Security Practices

Establishing robust security measures, continuous monitoring, employee training on cybersecurity awareness, and regular vulnerability assessments are essential for long-term protection against similar threats.

Patching and Updates

AMI has released security updates to address the CVE-2023-34343 vulnerability. It is crucial for organizations to consistently apply patches, firmware upgrades, and security updates to safeguard their systems and data.