COMMON WEAKNESS ENUMERATIONDraft

CWE-1304

Improperly Preserved Integrity of Hardware Configuration State During a Power Save/Restore Operation

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.

Soyutlama

Base

Yapı

Simple

Sömürü İhtimali

Medium

Problemi anla

Problem nedir?

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.

Genişletilmiş açıklama

Before powering down, the Intellectual Property (IP) saves current state (S) to persistent storage such as flash or always-on memory in order to optimize the restore operation. During this process, an attacker with access to the persistent storage may alter (S) to a configuration that could potentially modify privileges, disable protections, and/or cause damage to the hardware. If the IP does not validate the configuration state stored in persistent memory, upon regaining power or becoming operational again, the IP could be compromised through the activation of an unwanted/harmful configuration.

Kök neden

Problem nasıl ve ne zaman oluşur?

Yaşam döngüsü evresi

Architecture and Design

Weakness introduced via missing internal integrity guarantees during power save/restore

Yaşam döngüsü evresi

Integration

Weakness introduced via missing external integrity verification during power save/restore

Risk

Başarılı sömürü neye yol açar?

DoS: InstabilityDoS: Crash, Exit, or RestartDoS: Resource Consumption (Other)Gain Privileges or Assume IdentityBypass Protection MechanismAlter Execution LogicQuality DegradationUnexpected StateReduce MaintainabilityReduce PerformanceReduce Reliability

Etkilenen güvenlik alanları: Confidentiality, Integrity

Savunma

Nasıl önlenir ve çözülür?

Architecture and Design

Mimari ve tasarım yaklaşımı

Detay
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.

Integration

Integration aşaması savunması

Detay
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.

Integration

Integration aşaması savunması

Detay
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.
CWE-1304: Common Weakness Enumeration Entry CWE-1304 · DayBreach Sözlük · DayBreach