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CWE-1304 Base Rascunho
Improperly Preserved Integrity of Hardware Configuration State During a Power Save/Restore Operation
This vulnerability occurs when a hardware component saves its configuration state during a power-down operation but fails to protect or verify the integrity of that saved data before restoring it.…
Definição
What is CWE-1304?
This vulnerability occurs when a hardware component saves its configuration state during a power-down operation but fails to protect or verify the integrity of that saved data before restoring it. As a result, an attacker can tamper with the stored settings, leading to a compromised state when the device powers back on.
To optimize boot time, hardware Intellectual Property (IP) often saves its current operational state—like security settings or privilege levels—to persistent storage (e.g., flash memory) before entering a low-power mode. However, if this saved state isn't cryptographically protected or validated, an attacker with access to the storage can alter it. This manipulation could disable security features, escalate privileges, or force the hardware into a damaging configuration.
When the device restores from this tampered state after power-up, it blindly loads the corrupted configuration, activating the attacker's changes. This bypasses normal hardware security checks, potentially leading to persistent compromise, system damage, or a complete loss of security controls. The core issue is the lack of integrity checking (like using signatures or checksums) between the save and restore operations.
Impacto no mundo real
Real-world CVEs caused by CWE-1304
Ainda não há referências CVE públicas associadas a este CWE no catálogo da MITRE.
Como os atacantes a exploram
Trajeto do atacante passo a passo
- 1
The following pseudo code demonstrates the power save/restore workflow which may lead to weakness through a lack of validation of the config state after restore.
- 2
The following pseudo-code is the proper workflow for the integrity checking mitigation:
- 3
It must be noted that in the previous example of good pseudo code, the memory (where the hash of the config state is stored) must be trustworthy while the hardware is between the power save and restore states.
Exemplo de código vulnerável
Vulnerable C
The following pseudo code demonstrates the power save/restore workflow which may lead to weakness through a lack of validation of the config state after restore.
void save_config_state()
{
```
void* cfg;
cfg = get_config_state();
save_config_state(cfg);
go_to_sleep();
}
void restore_config_state()
{
void* cfg;
cfg = get_config_file();
load_config_file(cfg);
} Exemplo de código seguro
Secure C
The following pseudo-code is the proper workflow for the integrity checking mitigation:
void save_config_state()
{
```
void* cfg;
void* sha;
cfg = get_config_state();
save_config_state(cfg);
// save hash(cfg) to trusted location
sha = get_hash_of_config_state(cfg);
save_hash(sha);
go_to_sleep();
}
void restore_config_state()
{
void* cfg;
void* sha_1, sha_2;
cfg = get_config_file();
// restore hash of config from trusted memory
sha_1 = get_persisted_sha_value();
sha_2 = get_hash_of_config_state(cfg);
if (sha_1 != sha_2)
assert_error_and_halt();
load_config_file(cfg);
} What changed: the unsafe sink is replaced (or the input is validated/escaped) so the same payload no longer triggers the weakness.
Lista de verificação de prevenção
How to prevent CWE-1304
- 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.
- 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.
- 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.
Sinais de deteção
How to detect CWE-1304
Executar testes dinâmicos de segurança de aplicações (DAST) contra o endpoint em execução.
Monitorizar os registos em tempo de execução para traços de exceção invulgares, input malformado ou tentativas de contornar a autorização.
Revisão de código: sinalizar qualquer novo código que trate input desta superfície sem usar os ajudantes validados do framework.
O Plexicus deteta automaticamente o CWE-1304 e abre um PR de correção em menos de 60 segundos.
O Codex Remedium analisa cada commit, identifica esta fraqueza exata e entrega um pull request pronto para revisão com o patch. Sem tickets. Sem transferências.
Perguntas frequentes O que é o CWE-1304?
Qual a gravidade do CWE-1304?
Que linguagens ou plataformas são afetadas pelo CWE-1304?
Como posso prevenir o CWE-1304?
Como é que o Plexicus deteta e corrige o CWE-1304?
Onde posso saber mais sobre o CWE-1304?
Frequently asked questions
O que é o CWE-1304?
This vulnerability occurs when a hardware component saves its configuration state during a power-down operation but fails to protect or verify the integrity of that saved data before restoring it. As a result, an attacker can tamper with the stored settings, leading to a compromised state when the device powers back on.
Qual a gravidade do CWE-1304?
A MITRE não publicou uma classificação de probabilidade de exploração para esta fraqueza. Trate-a como impacto médio até o seu modelo de ameaças provar o contrário.
Que linguagens ou plataformas são afetadas pelo CWE-1304?
MITRE lists the following affected platforms: Not OS-Specific, Not Architecture-Specific, Not Technology-Specific.
Como posso prevenir o CWE-1304?
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. Outside…
Como é que o Plexicus deteta e corrige o CWE-1304?
O motor SAST do Plexicus correlaciona a assinatura de fluxo de dados do CWE-1304 em cada commit. Quando é encontrada uma correspondência, o nosso agente Codex Remedium abre um PR de correção com o código corrigido, testes e um resumo de uma linha para o revisor.
Onde posso saber mais sobre o CWE-1304?
A MITRE publica a definição canónica em https://cwe.mitre.org/data/definitions/1304.html. Pode também consultar a documentação da OWASP e do NIST para orientações adjacentes.
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