1976
CAPEC-ID Attack Pattern Name
665 Exploitation of Thunderbolt Protection Flaws
CWE-1189: Improper Isolation of Shared Resources on System-on-a-Chip
(SoC)
Weakness ID : 1189
Structure : Simple
Abstraction : Base
Description
The System-On-a-Chip (SoC) does not properly isolate shared resources between trusted and
untrusted agents.
Extended Description
A System-On-a-Chip (SoC) has a lot of functionality, but it may have a limited number of pins or
pads. A pin can only perform one function at a time. However, it can be configured to perform
multiple different functions. This technique is called pin multiplexing. Similarly, several resources
on the chip may be shared to multiplex and support different features or functions. When such
resources are shared between trusted and untrusted agents, untrusted agents may be able to
access the assets intended to be accessed only by the trusted agents.
Relationships
The table(s) below shows the weaknesses and high level categories that are related to this
weakness. These relationships are defined as ChildOf, ParentOf, MemberOr and give insight to
similar items that may exist at higher and lower levels of abstraction. In addition, relationships such
as PeerOf and CanAlsoBe are defined to show similar weaknesses that may want to be explored.
Relevant to the view "Research Concepts" (CWE-1000)
Nature Type ID Name Page
ChildOf 668 Exposure of Resource to Wrong Sphere 1469
ChildOf 653 Improper Isolation or Compartmentalization 1437
ParentOf 1303 Non-Transparent Sharing of Microarchitectural Resources 2174
PeerOf 1331 Improper Isolation of Shared Resources in Network On Chip
(NoC)