CVE-2023-4931 Explained : Impact and Mitigation

This CVE, assigned by INCIBE, involves an uncontrolled search path element vulnerability in Plesk Installer version 3.27.0.0. The vulnerability was published on November 27, 2023, and an update has been released to address the issue.

Understanding CVE-2023-4931

This section delves into the details of CVE-2023-4931, outlining the vulnerability's impact, technical aspects, affected systems, and mitigation strategies.

What is CVE-2023-4931?

CVE-2023-4931 refers to an uncontrolled search path element vulnerability in Plesk Installer version 3.27.0.0. This vulnerability could allow a local attacker to execute arbitrary code by injecting DLL files into the application's installation folder. Specifically, it can result in DLL hijacking in various files within the said folder.

The Impact of CVE-2023-4931

The CVSSv3.1 base score for this vulnerability is 6.3, indicating a medium severity level. The attack complexity is considered high, with a low availability impact but significant confidentiality and integrity impacts. Privileges required for exploitation are low, and user interaction is required.

Technical Details of CVE-2023-4931

In this section, we will explore the vulnerability description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability lies in the uncontrolled search path element within Plesk Installer version 3.27.0.0, which could be exploited by a local attacker to execute arbitrary code through DLL file injection.

Affected Systems and Versions

Plesk Installer version 3.27.0.0 is affected by this vulnerability. Users operating on this version may be at risk of exploitation by malicious actors.

Exploitation Mechanism

By injecting DLL files into the same directory where Plesk Installer version 3.27.0.0 is installed, attackers can exploit the uncontrolled search path element vulnerability and execute arbitrary code.

Mitigation and Prevention

To safeguard systems against CVE-2023-4931, it is crucial to implement immediate steps, adopt long-term security practices, and ensure timely patching and updates.

Immediate Steps to Take

Users are advised to update Plesk Installer to version 3.55.0 to address the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Incorporating secure coding practices, maintaining up-to-date software versions, and monitoring for unusual activities can enhance overall system security posture.

Patching and Updates

Regularly applying security patches and software updates is essential to mitigate the risks associated with known vulnerabilities like CVE-2023-4931. Ensuring that systems are running the latest patched versions helps in reducing the attack surface and bolstering cybersecurity defenses.