CVE Vulnerabilities

CVE-2016-2150

Improper Access Control

Published: Jun 09, 2016 | Modified: Apr 22, 2019
CVSS 3.x
7.1
HIGH
Source:
NVD
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.x
3.6 LOW
AV:L/AC:L/Au:N/C:P/I:P/A:N
RedHat/V2
4.3 IMPORTANT
AV:A/AC:M/Au:N/C:P/I:N/A:P
RedHat/V3
Ubuntu
MEDIUM

SPICE allows local guest OS users to read from or write to arbitrary host memory locations via crafted primary surface parameters, a similar issue to CVE-2015-5261.

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
Enterprise_linux Redhat 7.0 (including) 7.0 (including)
Enterprise_linux_desktop Redhat 7.0 (including) 7.0 (including)
Enterprise_linux_hpc_node_eus Redhat 7.2 (including) 7.2 (including)
Enterprise_linux_server Redhat 7.0 (including) 7.0 (including)
Enterprise_linux_server_aus Redhat 7.2 (including) 7.2 (including)
Enterprise_linux_server_eus Redhat 7.2 (including) 7.2 (including)
Enterprise_linux_workstation Redhat 7.0 (including) 7.0 (including)
Red Hat Enterprise Linux 6 RedHat spice-server-0:0.12.4-13.el6.1 *
Red Hat Enterprise Linux 7 RedHat spice-0:0.12.4-15.el7_2.1 *
Spice Ubuntu devel *
Spice Ubuntu precise *
Spice Ubuntu trusty *
Spice Ubuntu wily *
Spice Ubuntu xenial *
Spice Ubuntu yakkety *
Spice 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