Detalle CWE-1304

The product performs a power save/restore operation, but it does not ensure that the integrity of the configuration state is maintained and/or verified between the beginning and ending of the operation.

Modos de introducción

Architecture and Design : Weakness introduced via missing internal integrity guarantees during power save/restore
Integration : Weakness introduced via missing external integrity verification during power save/restore

Plataformas aplicables

Lenguaje

Class: Not Language-Specific (Undetermined)

Sistemas operativos

Class: Not OS-Specific (Undetermined)

Arquitecturas

Class: Not Architecture-Specific (Undetermined)

Tecnologías

Class: Not Technology-Specific (Undetermined)

Consecuencias comunes

Mitigaciones potenciales

Phases : Architecture and Design
Inside the IP, incorporate integrity checking on the configuration state via a cryptographic hash. The hash can be protected inside the IP such as by storing it in internal registers which never lose power. Before powering down, the IP performs a hash of the configuration and saves it in these persistent registers. Upon restore, the IP performs a hash of the saved configuration and compares it with the saved hash. If they do not match, then the IP should not trust the configuration.
Phases : Integration
Outside the IP, incorporate integrity checking of the configuration state via a trusted agent. Before powering down, the trusted agent performs a hash of the configuration and saves the hash in persistent storage. Upon restore, the IP requests the trusted agent validate its current configuration. If the configuration hash is invalid, then the IP should not trust the configuration.
Phases : Integration
Outside the IP, incorporate a protected environment that prevents undetected modification of the configuration state by untrusted agents. Before powering down, a trusted agent saves the IP's configuration state in this protected location that only it is privileged to. Upon restore, the trusted agent loads the saved state into the IP.

Notas de mapeo de vulnerabilidades

Justificación : 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.
Comentario : 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.

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