CVE-2020-3458
MediumCVSS 6.7Exploitation Probability (EPSS)
Low risk25th percentile - higher than 25% of all known CVEs
Summary
Multiple vulnerabilities in the secure boot process of Cisco ASA and FTD Software for Firepower 1000 and 2100 Series Appliances could allow an authenticated, local attacker to bypass the secure boot mechanism. The vulnerabilities are due to insufficient protections of the secure boot process. An attacker could inject code into specific files referenced during boot, allowing them to break the chain of trust and maintain persistence across reboots.
Risk Assessment
An attacker with local access could gain persistent control over the device, potentially compromising the security of the entire network. Injected code executes at each boot, making detection difficult.
Recommendation
Apply Cisco updates for Firepower 1000 and 2100 Series. Restrict local access to devices and regularly audit boot file integrity.
Original NVD description (English source)
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 could allow an authenticated, local attacker to bypass the secure boot mechanism. The vulnerabilities are due to insufficient protections of the secure boot process. An attacker could exploit these vulnerabilities by injecting code into specific files that are then referenced during the device boot process. A successful exploit could allow the attacker to break the chain of trust and inject code into the boot process of the device, which would be executed at each boot and maintain persistence across reboots.