CVE-2020-3455
Description
A vulnerability in the secure boot process of Cisco FXOS Software could allow an authenticated, local attacker to bypass the secure boot mechanisms. The vulnerability is due to insufficient protections of the secure boot process. An attacker could exploit this vulnerability by injecting code into a specific file that is 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.
Risk Information
Base Score
7.8
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.062
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability For Cisco Firepower Extensible Operating System (FXOS) | NCM |
| CVE-2020-3455 | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1706063 | Security Update for Cisco Firepower Extensible Operating System (FXOS) 4.1(3a)UCSM |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234