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CVE-2023-25540 : What You Need to Know

Learn about CVE-2023-25540 vulnerability in Dell PowerScale OneFS 9.4.0.x that could allow local attackers to overwrite files, leading to denial of service. Mitigation steps included.

This CVE-2023-25540 article discusses a vulnerability identified in Dell PowerScale OneFS 9.4.0.x that could be exploited by a local malicious user to overwrite arbitrary files, leading to denial of service.

Understanding CVE-2023-25540

This section provides an overview of the CVE-2023-25540 vulnerability in Dell PowerScale OneFS 9.4.0.x.

What is CVE-2023-25540?

The CVE-2023-25540 vulnerability is categorized as an incorrect default permissions issue in Dell PowerScale OneFS 9.4.0.x. It allows a local malicious user to exploit the vulnerability, potentially leading to the overwriting of arbitrary files and causing denial of service.

The Impact of CVE-2023-25540

The impact of CVE-2023-25540 is considered medium severity with a CVSS V3.1 base score of 6 out of 10. The vulnerability's availability impact is high, while the integrity impact is also high. Confidentiality impact is rated as none, and the attack vector is local with high privileges required.

Technical Details of CVE-2023-25540

In this section, we delve into the technical details of the CVE-2023-25540 vulnerability in Dell PowerScale OneFS 9.4.0.x.

Vulnerability Description

The vulnerability in Dell PowerScale OneFS 9.4.0.x arises from incorrect default permissions, allowing a local malicious user to exploit the issue by overwriting arbitrary files, potentially resulting in denial of service.

Affected Systems and Versions

Dell PowerScale OneFS version 9.4.0.x through 9.4.0.11 is affected by the CVE-2023-25540 vulnerability.

Exploitation Mechanism

The exploitation of CVE-2023-25540 involves a local malicious user leveraging the incorrect default permissions in Dell PowerScale OneFS 9.4.0.x to overwrite arbitrary files, leading to denial of service.

Mitigation and Prevention

This section outlines steps to mitigate and prevent the CVE-2023-25540 vulnerability in Dell PowerScale OneFS 9.4.0.x.

Immediate Steps to Take

        Organizations using Dell PowerScale OneFS 9.4.0.x should apply the necessary security updates provided by Dell to address the incorrect default permissions vulnerability.

Long-Term Security Practices

        Implement secure file system permissions and access controls to prevent unauthorized access and modifications to critical files.

Patching and Updates

        Regularly monitor vendor security advisories and apply patches promptly to address known vulnerabilities and enhance system security. Dell has released security updates for PowerScale OneFS to mitigate the CVE-2023-25540 vulnerability.

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