CVE Vulnerabilities

CVE-2016-2278

Improper Access Control

Published: Mar 02, 2016 | Modified: Oct 30, 2018
CVSS 3.x
7.2
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
9 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Schneider Electric Struxureware Building Operations Automation Server AS 1.7 and earlier and AS-P 1.7 and earlier allows remote authenticated administrators to execute arbitrary OS commands by defeating an msh (aka Minimal Shell) protection mechanism.

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
Struxureware_building_operations_automation_server_as Schneider-electric * 1.7

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