Szczegóły CWE-1328

Security-version number in hardware is mutable, resulting in the ability to downgrade (roll-back) the boot firmware to vulnerable code versions.

Sposoby wprowadzenia

Architecture and Design
Implementation : Such issues could be introduced during hardware architecture and design, and can be identified later during testing or system configuration phases.

Odpowiednie platformy

Język

Class: Not Language-Specific (Undetermined)

Systemy operacyjne

Class: Not OS-Specific (Undetermined)

Architektury

Class: Not Architecture-Specific (Undetermined)

Technologie

Name: Security Hardware (Undetermined)
Class: Not Technology-Specific (Undetermined)

Typowe konsekwencje

Potencjalne środki zaradcze

Phases : Architecture and Design
When architecting the system, security version data should be designated for storage in registers that are either read-only or have access controls that prevent modification by an untrusted agent.
Phases : Implementation
During implementation and test, security version data should be demonstrated to be read-only and access controls should be validated.

Metody wykrywania

Automated Dynamic Analysis

Mutability of stored security version numbers and programming with older firmware images should be part of automated testing.
Skuteczność : High

Architecture or Design Review

Anti-roll-back features should be reviewed as part of Architecture or Design review.
Skuteczność : High

Uwagi dotyczące mapowania podatności

Uzasadnienie : 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.
Komentarz : 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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