CWE-1257 Detail

Aliased or mirrored memory regions in hardware designs may have inconsistent read/write permissions enforced by the hardware. A possible result is that an untrusted agent is blocked from accessing a memory region but is not blocked from accessing the corresponding aliased memory region.

Introductiemodi

Architecture and Design
Implementation

Toepasselijke platforms

Taal

Class: Not Language-Specific (Undetermined)

Besturingssystemen

Class: Not OS-Specific (Undetermined)

Architecturen

Class: Not Architecture-Specific (Undetermined)

Technologieën

Name: Memory Hardware (Undetermined)
Name: Processor Hardware (Undetermined)
Name: Microcontroller Hardware (Undetermined)
Name: Network on Chip Hardware (Undetermined)
Class: System on Chip (Undetermined)

Veelvoorkomende gevolgen

Mogelijke risicobeperkingen

Phases : Architecture and Design // Implementation
The checks should be applied for consistency access rights between primary memory regions and any mirrored or aliased memory regions. If different memory protection units (MPU) are protecting the aliased regions, their protected range definitions and policies should be synchronized.
Phases : Architecture and Design // Implementation
The controls that allow enabling memory aliases or changing the size of mapped memory regions should only be programmable by trusted software components.

Notities kwetsbaarheidsmapping

Rechtvaardiging : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
Opmerking : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

Gerelateerde aanvalspatronen

Indiening

Wijzigingen