CVE-2020-3458 : Security Advisory and Response

Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software for Firepower 1000/2100 Series Appliances Secure Boot Bypass Vulnerabilities

Understanding CVE-2020-3458

This CVE involves multiple vulnerabilities in the secure boot process of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software for the Firepower 1000 Series and Firepower 2100 Series Appliances.

What is CVE-2020-3458?

The vulnerabilities could allow an authenticated, local attacker to bypass the secure boot mechanism by injecting code into specific files referenced during the device boot process.

The Impact of CVE-2020-3458

CVSS Score: 6.7 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2020-3458

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerabilities are a result of insufficient protections in the secure boot process, enabling attackers to inject malicious code into the boot process, compromising the device's integrity.

Affected Systems and Versions

Affected Product: Cisco Adaptive Security Appliance (ASA) Software
Vendor: Cisco
Affected Versions: Not Applicable

Exploitation Mechanism

Attackers can exploit these vulnerabilities by injecting code into specific files referenced during the device boot process, allowing them to compromise the device's boot process and maintain persistence across reboots.

Mitigation and Prevention

Protecting systems from CVE-2020-3458 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches and updates promptly.
Monitor Cisco's security advisories for any further updates or mitigations.

Long-Term Security Practices

Implement strict access controls to prevent unauthorized access to critical systems.
Regularly review and update security configurations to mitigate potential vulnerabilities.

Patching and Updates

Cisco has likely released patches to address these vulnerabilities. Ensure timely application of these patches to secure affected systems.