CWE-1233
Security-Sensitive Hardware Controls with Missing Lock Bit Protection
2020-02-24
00h00 +00:00
00h00 +00:00
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Nombre: Security-Sensitive Hardware Controls with Missing Lock Bit Protection
The product uses a register lock bit protection mechanism, but it does not ensure that the lock bit prevents modification of system registers or controls that perform changes to important hardware system configuration.
Informaciones generales
Detalles de contexto
Modos de introducción
Architecture and Design : Such issues could be introduced during hardware architecture and design and identified later during Testing or System Configuration phases.Implementation : Such issues could be introduced during implementation and identified later during Testing or System Configuration phases.
Plataformas aplicables
Lenguaje
Clase: Not Language-Specific (Undetermined)Sistemas operativos
Clase: Not OS-Specific (Undetermined)Arquitecturas
Clase: Not Architecture-Specific (Undetermined)Tecnologías
Clase: Not Technology-Specific (Undetermined)Consecuencias comunes
| Alcance | Impacto | Probabilidad |
|---|---|---|
| Access Control | Modify Memory Note: System Configuration protected by the lock bit can be modified even when the lock is set. If the lock bit does not effectively write-protect all system registers or controls that could modify the protected system configuration, then an adversary may be able to use software to access the registers/controls and modify the protected hardware configuration. |
Ejemplos observados
| Referencias | Descripción |
|---|---|
CVE-2025-61972 | Processor product does not perform lock bit protection for certain registers. |
CVE-2018-9085 | Certain servers leave a write protection lock bit unset after boot, potentially allowing modification of parts of flash memory. |
CVE-2014-8273 | Chain: chipset has a race condition (CWE-362) between when an interrupt handler detects an attempt to write-enable the BIOS (in violation of the lock bit), and when the handler resets the write-enable bit back to 0, allowing attackers to issue BIOS writes during the timing window [REF-1237]. |
Mitigaciones potenciales
Phases : Architecture and Design // Implementation // TestingMétodos de detección
Manual Analysis
Set the lock bit. Attempt to modify the information protected by the lock bit. If the information is changed, implement a design fix. Retest. Also, attempt to indirectly clear the lock bit or bypass it.Efectividad : High
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.
Patrones de ataque relacionados
| CAPEC ID | Nombre del patrón de ataque |
|---|---|
| CAPEC-176 | Configuration/Environment Manipulation
An attacker manipulates files or settings external to a target application which affect the behavior of that application. For example, many applications use external configuration files and libraries - modification of these entities or otherwise affecting the application's ability to use them would constitute a configuration/environment manipulation attack. |
| CAPEC-680 | Exploitation of Improperly Controlled Registers
|
Referencias
REF-1237
Intel BIOS locking mechanism contains race condition that enables write protection bypassCERT Coordination Center.
https://www.kb.cert.org/vuls/id/766164/
Envío
| Nombre | Organización | Fecha | Fecha de lanzamiento | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi | Intel Corporation | 4.0 |
Modificaciones
| Nombre | Organización | Fecha | Comentario |
|---|---|---|---|
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Maintenance_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Description, Detection_Factors, Maintenance_Notes, Name, Observed_Examples, Potential_Mitigations, References, Relationships, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns, Relationships | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Description, Observed_Examples |
