CVE-2021-25133 : Security Advisory and Response
Learn about CVE-2021-25133 impacting HPE Cloudline servers. Explore the buffer overflow vulnerability in BMC firmware, affected systems, and mitigation steps.
A local buffer overflow vulnerability has been identified in the Baseboard Management Controller (BMC) firmware of various HPE Cloudline servers. This vulnerability affects multiple versions of BMC firmware and can be exploited through the spx_restservice setradiusconfig_func function.
Understanding CVE-2021-25133
This section provides an overview of the vulnerability and its impact.
What is CVE-2021-25133?
The vulnerability lies in the BMC firmware of HPE Cloudline servers, allowing a local buffer overflow attack through a specific function.
The Impact of CVE-2021-25133
The impact of this vulnerability can lead to unauthorized access, denial of service, and potentially further exploitation of the affected servers.
Technical Details of CVE-2021-25133
Here, we delve into the technical aspects of the vulnerability.
Vulnerability Description
The local buffer overflow occurs in the spx_restservice setradiusconfig_func function within the BMC firmware of HPE Cloudline servers.
Affected Systems and Versions
Multiple HPE Cloudline server models are affected, including CL5800 Gen9, CL5200 Gen9, CL4100 Gen10, CL3100 Gen10, and CL5800 Gen10. Various versions of BMC firmware are impacted, such as Version 1.09.0.0, 1.07.0.0, 1.10.0.0, 1.08.0.0, and more.
Exploitation Mechanism
The vulnerability can be exploited locally, potentially leading to a buffer overflow attack that could compromise the security of the affected servers.
Mitigation and Prevention
In this section, we discuss measures to mitigate the risk posed by CVE-2021-25133.
Immediate Steps to Take
Users are advised to apply security patches provided by HPE to address the vulnerability promptly. It is crucial to restrict access to vulnerable BMC interfaces.
Long-Term Security Practices
Regularly monitoring for security updates and applying patches is essential to maintain the integrity of the servers and prevent potential security breaches.
Patching and Updates
Stay informed about security advisories from HPE and ensure that the BMC firmware of Cloudline servers is kept up to date with the latest patches and security fixes.