CVE-2021-26576 Explained : Impact and Mitigation

The Baseboard Management Controller (BMC) firmware in HPE Apollo 70 System prior to version 3.0.14.0 has a command injection vulnerability in libifc.so uploadsshkey function.

Understanding CVE-2021-26576

This CVE affects the HPE Apollo 70 System, exposing it to a command injection vulnerability due to a flaw in the BMC firmware.

What is CVE-2021-26576?

The vulnerability exists in the libifc.so uploadsshkey function of the BMC firmware in HPE Apollo 70 System before version 3.0.14.0, allowing attackers to execute arbitrary commands remotely.

The Impact of CVE-2021-26576

Malicious actors can exploit this vulnerability to gain unauthorized access, execute commands, and potentially take full control of the affected system. This could lead to data breaches, system disruptions, and other serious consequences.

Technical Details of CVE-2021-26576

The following technical aspects are associated with CVE-2021-26576:

Vulnerability Description

The vulnerability stems from a command injection issue in the libifc.so uploadsshkey function of HPE Apollo 70 System BMC firmware, enabling attackers to inject and execute arbitrary commands.

Affected Systems and Versions

HPE Apollo 70 Systems running firmware versions prior to 3.0.14.0 are susceptible to this vulnerability.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending crafted input to the affected uploadsshkey function, leading to the execution of unauthorized commands on the target system.

Mitigation and Prevention

To address CVE-2021-26576 and enhance system security, consider the following mitigation strategies:

Immediate Steps to Take

Update the BMC firmware on HPE Apollo 70 Systems to version 3.0.14.0 or above to eliminate the command injection vulnerability.
Implement network segmentation and access controls to restrict unauthorized access to BMC interfaces.

Long-Term Security Practices

Regularly monitor vendor security advisories and apply patches promptly to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential security gaps in BMC firmware.

Patching and Updates

Stay informed about security updates released by HPE for the Apollo 70 System and prioritize the installation of patches to protect against emerging threats.