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Cisco FXOS Software for Firepower 4100/9300 Series Appliances Secure Boot Bypass Vulnerability

cisco-sa-fxos-sbbp-XTuPkYTn · High · Published · Updated

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. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbp-XTuPkYTn

Cisco advisory ·CSAF JSON

Workarounds

There are no workarounds that address this vulnerability.

CVEsCVE-2020-3455
Cisco Bug IDsCSCvt31171
CVSS ScoreBase 6.7
Base 6.7 CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:X/RL:X/RC:X
Product Names From Source
Cisco Firepower Extensible Operating System (FXOS) 2.2.1.63, Cisco Firepower Extensible Operating System (FXOS) 2.2.1.70, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.17, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.26, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.28, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.54, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.60, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.83, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.97, Cisco Firepower Extensible Operating System (FXOS) 2.2.2.137, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.99, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.91, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.88, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.58, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.130, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.111, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.110, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.144, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.145, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.155, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.166, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.179, Cisco Firepower Extensible Operating System (FXOS) 2.3.1.56, Cisco Firepower Extensible Operating System (FXOS) 2.6.1.131, Cisco Firepower Extensible Operating System (FXOS) 2.6.1.166, Cisco Firepower Extensible Operating System (FXOS) 2.6.1.169, Cisco Firepower Extensible Operating System (FXOS) 2.6.1.174, Cisco Firepower Extensible Operating System (FXOS) 2.6.1.192, Cisco Firepower Extensible Operating System (FXOS), Cisco Firepower 9000 Series, Cisco Firepower 4100 Series

Related Products

Product CVE Evidence
Firepower Extensible Operating System CVE-2020-3455 Cisco OpenVuln
Cisco Firepower Extensible Operating System (FXOS) CVE-2020-3455 Cisco OpenVuln
Cisco Firepower Extensible Operating System CVE-2020-3455 Cisco OpenVuln
Cisco Firepower 9000 Series CVE-2020-3455 Cisco OpenVuln
Cisco Firepower 4100 Series CVE-2020-3455 Cisco OpenVuln