CVE-2023-0757 : Vulnerability Insights and Analysis

This CVE was published on December 14, 2023, and is related to an incorrect permission assignment vulnerability in PHOENIX CONTACT MULTIPROG and PHOENIX CONTACT ProConOS eCLR (SDK). The vulnerability allows an unauthenticated remote attacker to upload arbitrary malicious code and gain full access on the affected device.

Understanding CVE-2023-0757

This section will cover what CVE-2023-0757 is, the impact it has, its technical details, and mitigation strategies.

What is CVE-2023-0757?

CVE-2023-0757 is an incorrect permission assignment vulnerability that affects PHOENIX CONTACT MULTIPROG and PHOENIX CONTACT ProConOS eCLR (SDK). It enables an unauthenticated remote attacker to upload malicious code and gain complete access to the compromised device.

The Impact of CVE-2023-0757

The impact of this vulnerability is classified as critical, with a CVSS base score of 9.8. It has a high impact on availability, confidentiality, and integrity, posing a significant risk to affected systems.

Technical Details of CVE-2023-0757

This section delves into the vulnerability description, the affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from an incorrect permission assignment for critical resources in PHOENIX CONTACT MULTIPROG and PHOENIX CONTACT ProConOS eCLR (SDK), allowing unauthorized remote attackers to upload and execute arbitrary malicious code.

Affected Systems and Versions

The affected products include MULTIPROG and ProConOS eCLR (SDK) by PHOENIX CONTACT. All versions of these products are impacted by this vulnerability.

Exploitation Mechanism

By exploiting this vulnerability, unauthenticated remote attackers can upload arbitrary malicious code to the affected device, granting them unauthorized access and control over it.

Mitigation and Prevention

In response to CVE-2023-0757, it is crucial to implement immediate steps, adopt long-term security practices, and ensure timely patching and updates to mitigate the risk posed by the vulnerability.

Immediate Steps to Take

Immediately restrict access to potentially affected devices, monitor network traffic for any suspicious activity, and apply security controls to prevent unauthorized code execution.

Long-Term Security Practices

Establish robust access control policies, conduct regular security assessments, prioritize security awareness training for personnel, and implement secure coding practices to prevent similar vulnerabilities in the future.

Patching and Updates

Monitor vendor notifications for security patches and updates related to PHOENIX CONTACT MULTIPROG and ProConOS eCLR (SDK). Promptly apply patches to remediate the vulnerability and enhance the security posture of the systems.