CVE-2023-2569 : Exploit Details and Defense Strategies

This CVE record was published on June 14, 2023, by Schneider Electric, affecting their product EcoStruxure Foxboro DCS Control Core Services. The vulnerability identified is a CWE-787: Out-of-Bounds Write, which could lead to local denial-of-service, elevation of privilege, and potentially kernel execution when a malicious actor crafts a script/program using an IOCTL call in the Foxboro.sys driver.

Understanding CVE-2023-2569

This section delves into the details of CVE-2023-2569, exploring the vulnerability, its impact, technical aspects, and mitigation strategies.

What is CVE-2023-2569?

CVE-2023-2569 is a security vulnerability categorized as a CWE-787: Out-of-Bounds Write. It is present in the EcoStruxure Foxboro DCS Control Core Services product by Schneider Electric. The vulnerability can be exploited by a local user to cause denial-of-service, privilege escalation, and potentially execute arbitrary code in the kernel.

The Impact of CVE-2023-2569

The impact of this vulnerability is significant, with a CVSS v3.1 base score of 7.8, classifying it as a high-severity issue. Due to the exploit's nature, it poses a high risk to confidentiality, integrity, and availability, making it crucial to address promptly.

Technical Details of CVE-2023-2569

In this section, we will explore the technical aspects of CVE-2023-2569, including vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from an Out-of-Bounds Write flaw, allowing a local user to manipulate the Foxboro.sys driver through crafted scripts or programs. This manipulation can lead to severe consequences such as denial-of-service, privilege escalation, and potential kernel execution.

Affected Systems and Versions

All versions of EcoStruxure Foxboro DCS Control Core Services prior to patch HF9857795 are affected by CVE-2023-2569. Users utilizing these versions are at risk and should take immediate action to secure their systems.

Exploitation Mechanism

A malicious actor with local user access can exploit this vulnerability by creating a script or program that utilizes an IOCTL call in the vulnerable Foxboro.sys driver. Through this manipulation, the actor can trigger out-of-bounds writes, leading to the mentioned security risks.

Mitigation and Prevention

This section focuses on the necessary steps to mitigate the risks associated with CVE-2023-2569, offering immediate actions and long-term security practices.

Immediate Steps to Take

Users and administrators are advised to apply the provided patch HF9857795 to all affected EcoStruxure Foxboro DCS Control Core Services installations. Additionally, monitoring system logs for any suspicious activities can help detect potential exploitation attempts.

Long-Term Security Practices

To enhance overall system security, implementing the principle of least privilege, regularly updating systems and software, conducting security assessments, and educating users on safe computing practices are recommended long-term security measures.

Patching and Updates

Regularly monitoring vendor security advisories and promptly applying patches or updates for all software and firmware components can help mitigate the risk of similar vulnerabilities in the future. Stay informed about security best practices and prioritize keeping systems up to date to prevent exploitation of known vulnerabilities.