CVE Vulnerabilities

CVE-2016-2354

Improper Access Control

Published: Apr 22, 2016 | Modified: May 31, 2016
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
8 HIGH
AV:A/AC:L/Au:N/C:P/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

The Bluetooth functionality in Lemur Vehicle Monitors BlueDriver before 2016-04-07 supports unrestricted pairing without a PIN, which allows remote attackers to send arbitrary CAN commands by leveraging access to a device inside or adjacent to the vehicle, as demonstrated by a CAN command to disrupt braking or steering.

Weakness

The software does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

Name Vendor Start Version End Version
Bluedriver Lemurmonitors * 6.3.2

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the software by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References