Description

The product does not properly compartmentalize or isolate functionality, processes, or resources that require different privilege levels, rights, or permissions.

When a weakness occurs in functionality that is accessible by lower-privileged users, then without strong boundaries, an attack might extend the scope of the damage to higher-privileged users.

Modes of Introduction:

– Architecture and Design

Related Weaknesses

CWE-657
CWE-693

Consequences

Access Control: Gain Privileges or Assume Identity, Bypass Protection Mechanism

The exploitation of a weakness in low-privileged areas of the software can be leveraged to reach higher-privileged areas without having to overcome any additional obstacles.

Potential Mitigations

Phase: Architecture and Design

Description: 

Break up privileges between different modules, objects, or entities. Minimize the interfaces between modules and require strong access control between them.

CVE References

• CVE-2019-6260
  • Baseboard Management Controller (BMC) device implements Advanced High-performance Bus (AHB) bridges that do not require authentication for arbitrary read and write access to the BMC’s physical address space from the host, and possibly the network [REF-1138].