CVE-2023-2570 : What You Need to Know

This CVE record outlines a security vulnerability identified as CWE-129 in Schneider Electric's EcoStruxure Foxboro DCS Control Core Services.

Understanding CVE-2023-2570

This vulnerability involves an Improper Validation of Array Index issue that could lead to local denial-of-service and potentially kernel execution when a malicious actor with local user access crafts a script or program using an unpredictable index to an IOCTL call in the Foxboro.sys driver.

What is CVE-2023-2570?

The CVE-2023-2570 vulnerability is classified under CWE-129, which refers to the improper validation of array indexes. In this case, the flaw allows a local user to orchestrate a denial-of-service attack and potentially execute arbitrary code within the kernel by manipulating IOCTL calls within the Foxboro.sys driver.

The Impact of CVE-2023-2570

The impact of this vulnerability is rated as high, with a CVSS v3.1 base score of 7.0. The attack complexity is considered high, with a local attack vector. The confidentiality, integrity, and availability impacts are all deemed high, signaling the severity of potential exploitation.

Technical Details of CVE-2023-2570

This section delves into specific technical aspects of the CVE-2023-2570 vulnerability.

Vulnerability Description

The vulnerability stems from improper validation of array indexes, allowing a local user to trigger denial-of-service conditions and potentially execute unauthorized code within the kernel by manipulating IOCTL calls in the Foxboro.sys driver.

Affected Systems and Versions

The affected product is Schneider Electric's EcoStruxure Foxboro DCS Control Core Services, specifically all versions prior to patch HF9857795.

Exploitation Mechanism

The vulnerability can be exploited by a malicious actor with local user access who crafts a script or program utilizing an unpredictable index to an IOCTL call in the vulnerable Foxboro.sys driver.

Mitigation and Prevention

Mitigating CVE-2023-2570 requires proactive security measures to safeguard against potential exploits.

Immediate Steps to Take

Apply the available patch HF9857795 to address the vulnerability in EcoStruxure Foxboro DCS Control Core Services.
Monitor system logs for any unusual activity that could indicate exploitation attempts.

Long-Term Security Practices

Implement the principle of least privilege to restrict users' access rights, reducing the impact of potential vulnerabilities.
Conduct regular security assessments and audits to identify and address security gaps proactively.

Patching and Updates

Regularly update and patch software and firmware to ensure systems are equipped with the latest security enhancements and vulnerability fixes. Stay informed about security advisories from Schneider Electric to apply relevant updates promptly.