CVE-2021-25128 : Security Advisory and Response

A vulnerability has been identified in the Baseboard Management Controller(BMC) firmware of HPE Cloudline servers, potentially impacting several versions. Here is a detailed overview of CVE-2021-25128.

Understanding CVE-2021-25128

This section delves into the nature of the vulnerability and its implications.

What is CVE-2021-25128?

The Baseboard Management Controller(BMC) in HPE Cloudline servers is affected by a local spx_restservice gethelpdata_func function path traversal vulnerability. This vulnerability could allow an attacker to traverse restricted directories on the server, leading to unauthorized access and potential exploitation.

The Impact of CVE-2021-25128

With this vulnerability, malicious actors could exploit the BMC firmware to gain unauthorized access to sensitive information, manipulate data, disrupt services, or launch further attacks within the affected servers.

Technical Details of CVE-2021-25128

This section provides more technical insights into the vulnerability.

Vulnerability Description

The local spx_restservice gethelpdata_func function path traversal vulnerability in the BMC firmware of HPE Cloudline servers allows illicit directory traversal, posing a significant security risk to the integrity and confidentiality of the systems.

Affected Systems and Versions

The vulnerability impacts multiple versions of HPE Cloudline servers, including HPE Cloudline CL5800 Gen9, CL5200 Gen9, CL4100 Gen10, CL3100 Gen10, and CL5800 Gen10, running specific firmware versions.

Exploitation Mechanism

Attackers can potentially exploit this vulnerability by manipulating the path traversal function to bypass access restrictions, gaining unauthorized entry to critical system files and directories.

Mitigation and Prevention

This section outlines the necessary steps to secure the affected systems and prevent exploitation.

Immediate Steps to Take

To mitigate the risk associated with CVE-2021-25128, users are advised to apply security patches provided by HPE immediately. Additionally, restricting network access to the BMC interface can help reduce exposure to potential attacks.

Long-Term Security Practices

Implementing robust access controls, regular security assessments, and monitoring BMC activities can enhance the long-term security posture of HPE Cloudline servers.

Patching and Updates

Regularly check for firmware updates and security advisories from HPE to ensure the timely application of patches and enhancements that address known vulnerabilities.