CVE Vulnerabilities

CVE-2019-15967

Improper Access Control

Published: Nov 26, 2019 | Modified: Nov 21, 2024
CVSS 3.x
4.4
MEDIUM
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVSS 2.x
2.1 LOW
AV:L/AC:L/Au:N/C:P/I:N/A:N
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the CLI of Cisco TelePresence Collaboration Endpoint (CE) and Cisco RoomOS Software could allow an authenticated, local attacker to enable audio recording without notifying users. The vulnerability is due to the presence of unnecessary debug commands. An attacker could exploit this vulnerability by gaining unrestricted access to the restricted shell and using the specific debug commands. A successful exploit could allow the attacker to enable the microphone of an affected device to record audio without notifying users.

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
Telepresence_collaboration_endpoint Cisco * 9.8.1 (excluding)

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