CVE-2021-25124 : Exploit Details and Defense Strategies

The Baseboard Management Controller(BMC) in HPE Cloudline servers has a local spx_restservice deletevideo_func function path traversal vulnerability that can allow an attacker to bypass security restrictions.

Understanding CVE-2021-25124

This CVE identifies a path traversal vulnerability in the BMC firmware of HPE Cloudline servers, potentially leading to unauthorized access.

What is CVE-2021-25124?

The vulnerability in the BMC firmware of HPE Cloudline servers allows an attacker to traverse the file system path through the affected function, compromising the security of the system.

The Impact of CVE-2021-25124

Attackers exploiting this vulnerability can access and delete critical video files or gain unauthorized control over the affected servers, posing a serious security risk to organizations.

Technical Details of CVE-2021-25124

This section provides a closer look at the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability resides in the local spx_restservice deletevideo_func function of the BMC firmware, enabling a path traversal attack.

Affected Systems and Versions

HPE Cloudline CL5800 Gen9, CL5200 Gen9, CL4100 Gen10, CL3100 Gen10, and CL5800 Gen10 servers are affected. Versions 1.09.0.0, 1.07.0.0, 1.10.0.0, and 1.08.0.0 are confirmed vulnerable.

Exploitation Mechanism

By exploiting the path traversal vulnerability in the BMC firmware, malicious actors can navigate outside the intended directory structure and access unauthorized files or directories.

Mitigation and Prevention

To address CVE-2021-25124, immediate steps, long-term security practices, and the importance of patching and updates are crucial.

Immediate Steps to Take

Organizations should restrict network access to vulnerable systems, monitor for any unauthorized activities, and apply security updates promptly.

Long-Term Security Practices

Implementing least privilege access, regular security audits, and employee training can enhance overall system security and prevent similar vulnerabilities.

Patching and Updates

HPE has released patches to address the vulnerability. It is vital for organizations to apply these patches as soon as possible to mitigate the risk of exploitation.