CVE-2021-25123 : Security Advisory and Response

The Baseboard Management Controller(BMC) in HPE Cloudline servers has a local buffer overflow vulnerability in the spx_restservice addlicense_func function.

Understanding CVE-2021-25123

This CVE involves a buffer overflow vulnerability in the Baseboard Management Controller (BMC) of HPE Cloudline servers, potentially impacting the affected server models.

What is CVE-2021-25123?

The vulnerability in the BMC firmware of HPE Cloudline servers could allow a local attacker to trigger a buffer overflow via the spx_restservice addlicense_func function.

The Impact of CVE-2021-25123

If exploited, this vulnerability could lead to unauthorized access or the execution of arbitrary code on the affected servers, compromising their security and integrity.

Technical Details of CVE-2021-25123

This section provides specific technical details related to the vulnerability.

Vulnerability Description

The vulnerability arises from a local buffer overflow in the spx_restservice addlicense_func function within the BMC firmware of HPE Cloudline servers.

Affected Systems and Versions

The vulnerability affects multiple versions of the BMC firmware across several HPE Cloudline server models, including CL5800 Gen9, CL5200 Gen9, CL4100 Gen10, and others.

Exploitation Mechanism

An attacker with local access to the affected server could exploit this vulnerability by sending malicious input to the spx_restservice addlicense_func function, potentially leading to a buffer overflow.

Mitigation and Prevention

To address CVE-2021-25123 and enhance the security of HPE Cloudline servers, it is crucial to adopt appropriate mitigation strategies.

Immediate Steps to Take

Immediately update the BMC firmware to a patched version provided by HPE to mitigate the vulnerability and prevent exploitation.

Long-Term Security Practices

Regularly monitor and apply security updates to all server components, including BMC firmware, to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security advisories from HPE and promptly apply recommended patches and updates to ensure ongoing protection against potential threats.