Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2018-20785

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
23/02/2019
Last modified:
03/10/2019

Description

Secure boot bypass and memory extraction can be achieved on Neato Botvac Connected 2.2.0 devices. During startup, the AM335x secure boot feature decrypts and executes firmware. Secure boot can be bypassed by starting with certain commands to the USB serial port. Although a power cycle occurs, this does not completely reset the chip: memory contents are still in place. Also, it restarts into a boot menu that enables XMODEM upload and execution of an unsigned QNX IFS system image, thereby completing the bypass of secure boot. Moreover, the attacker can craft custom IFS data and write it to unused memory to extract all memory contents that had previously been present. This includes the original firmware and sensitive information such as Wi-Fi credentials.

Impact

Vector 3.x
CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.40 HIGH
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.40
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.40 MEDIUM
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:neatorobotics:botvac_d4_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d4_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_d6_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d6_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_d5_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d5_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_d7_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d7_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_d3_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d3_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_d3_pro_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_d3_pro_connected:-:*:*:*:*:*:*:*
cpe:2.3:o:neatorobotics:botvac_connected_firmware:2.2.0:*:*:*:*:*:*:*
cpe:2.3:h:neatorobotics:botvac_connected:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools