CWE-1189—Improper Isolation of Shared Resources on System-on-a-Chip (SoC)

名称

Improper Isolation of Shared Resources on System-on-a-Chip (SoC)

描述

The System-On-a-Chip (SoC) does not properly isolate shared resources between trusted and untrusted agents.

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.

常见后果

范围：

Access Control

影响：

Bypass Protection Mechanism

注释：

If resources being used by a trusted user are shared with an untrusted user, the untrusted user may be able to modify the functionality of the shared resource of the trusted user.

范围：

Integrity

影响：

Quality Degradation

注释：

The functionality of the shared resource may be intentionally degraded.

相关 CWE

• CWE-653Improper Isolation or Compartmentalization
• CWE-668Exposure of Resource to Wrong Sphere
• CWE-1331Improper Isolation of Shared Resources in Network On Chip (NoC)