CVE Vulnerabilities

CVE-2016-5206

Improper Access Control

Published: Jan 19, 2017 | Modified: Jan 05, 2018
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
6.8 IMPORTANT
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V3
8.8 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu

The PDF plugin in Google Chrome prior to 55.0.2883.75 for Mac, Windows and Linux, and 55.0.2883.84 for Android incorrectly followed redirects, which allowed a remote attacker to bypass the Same Origin Policy via a crafted HTML page.

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
Chrome Google * 54.0.2840.99
Red Hat Enterprise Linux 6 Supplementary RedHat chromium-browser-0:55.0.2883.75-1.el6 *
Chromium-browser Ubuntu devel *
Chromium-browser Ubuntu precise *
Chromium-browser Ubuntu trusty *
Chromium-browser Ubuntu upstream *
Chromium-browser Ubuntu xenial *
Chromium-browser Ubuntu yakkety *
Chromium-browser Ubuntu zesty *

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