Cisco Firepower Threat Defense (FTD) Secure Boot Hardware Tampering Vulnerability (cisco-sa-20190513-secureboot)
medium Nessus Plugin ID 125341
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its version, the Cisco Firepower Threat Defense (FTD) software installed on the remote host is affected by a vulnerability in the logic that handles access control to one of the hardware components in Cisco's proprietary Secure Boot implementation could allow an authenticated, local attacker to write a modified firmware image to the component.This vulnerability affects multiple Cisco products that support hardware-based Secure Boot functionality. The vulnerability is due to an improper check on the area of code that manages on-premise updates to a Field Programmable Gate Array (FPGA) part of the Secure Boot hardware implementation. An attacker with elevated privileges and access to the underlying operating system that is running on the affected device could exploit this vulnerability by writing a modified firmware image to the FPGA. A successful exploit could either cause the device to become unusable (and require a hardware replacement) or allow tampering with the Secure Boot verification process, which under some circumstances may allow the attacker to install and boot a malicious software image.
Please see the included Cisco BIDs and Cisco Security Advisory for more information
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvn77248See Also
Plugin Details
Severity: Medium
ID: 125341
File Name: cisco-sa-20190513-secureboot-ftd.nasl
Version: 1.5
Type: local
Family: CISCO
Published: 5/23/2019
Updated: 4/27/2020
Configuration: Enable paranoid mode
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:U/RL:OF/RC:C
CVSS Score Source: CVE-2019-1649
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 5.8
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:cisco:firepower, cpe:/a:cisco:firepower_threat_defense
Required KB Items: installed_sw/Cisco Firepower Threat Defense, Settings/ParanoidReport
Exploit Ease: No known exploits are available
Patch Publication Date: 5/13/2019
Vulnerability Publication Date: 5/13/2019
Reference Information
CVE: CVE-2019-1649