CVE Vulnerabilities

CVE-2019-1647

Improper Access Control

Published: Jan 24, 2019 | Modified: Oct 09, 2019
CVSS 3.x
8
HIGH
Source:
NVD
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.7 HIGH
AV:A/AC:L/Au:S/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the Cisco SD-WAN Solution could allow an authenticated, adjacent attacker to bypass authentication and have direct unauthorized access to other vSmart containers. The vulnerability is due to an insecure default configuration of the affected system. An attacker could exploit this vulnerability by directly connecting to the exposed services. An exploit could allow the attacker to retrieve and modify critical system files.

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
Sd-wan Cisco * 18.4.0 (excluding)
Vsmart_controller Cisco - (including) - (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