CVE Vulnerabilities

CVE-2009-5151

Improper Access Control

Published: May 11, 2018 | Modified: Jun 14, 2018
CVSS 3.x
6.7
MEDIUM
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

The stub component of Absolute Computrace Agent V70.785 executes code from a disks inter-partition space without requiring a digital signature for that code, which allows attackers to execute code on the BIOS. This allows a privileged local user to achieve persistent control of BIOS behavior, independent of later disk changes.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Computrace_agent Absolute 70.785 (including) 70.785 (including)

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 product 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