CVE-2021-25136 Explained : Impact and Mitigation

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

Understanding CVE-2021-25136

This CVE affects HPE Cloudline servers, exposing a critical vulnerability in the BMC firmware.

What is CVE-2021-25136?

The vulnerability lies in the spx_restservice setsolvideoremotestorage_func function of the BMC firmware of HPE Cloudline servers, allowing a local buffer overflow.

The Impact of CVE-2021-25136

This vulnerability could be exploited by an attacker to execute arbitrary code or crash the BMC service, potentially leading to a denial of service or unauthorized access.

Technical Details of CVE-2021-25136

The following technical details unravel the specifics of this security flaw.

Vulnerability Description

A local buffer overflow in the spx_restservice setsolvideoremotestorage_func function of the BMC firmware of affected HPE Cloudline servers.

Affected Systems and Versions

The vulnerability affects multiple versions of HPE Cloudline servers, including CL5800 Gen9, CL5200 Gen9, CL4100 Gen10, and more.

Exploitation Mechanism

Exploitation of this vulnerability may allow an attacker to manipulate the buffer overflow within the BMC firmware, potentially leading to unauthorized actions.

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of vulnerabilities is crucial for enhancing cybersecurity.

Immediate Steps to Take

Apply security patches and updates provided by HPE promptly.
Implement network security measures to restrict unauthorized access to BMC interfaces.

Long-Term Security Practices

Regularly monitor vendor security alerts for firmware updates and security advisories.
Conduct regular security audits and vulnerability assessments on BMC infrastructure.

Patching and Updates

Ensure timely installation of firmware updates and security patches released by HPE to address the vulnerability in the BMC firmware of Cloudline servers.