CWE-1233 Detail

CWE-1233

Security-Sensitive Hardware Controls with Missing Lock Bit Protection
Stable
2020-02-24
00h00 +00:00
2025-09-09
00h00 +00:00
CWE Mitre.org
Notifiche per un CWE specifico
Rimani informato su qualsiasi modifica relativa a un CWE specifico.
Gestione notifiche

Nome: 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.

General Informations

Modes Of Introduction

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.

Piattaforme applicabili

Linguaggio

Class: Not Language-Specific (Undetermined)

Sistemi operativi

Class: Not OS-Specific (Undetermined)

Architetture

Class: Not Architecture-Specific (Undetermined)

Tecnologie

Class: Not Technology-Specific (Undetermined)

Conseguenze comuni

Ambito Impatto Probabilità
Access ControlModify Memory

Note: System Configuration protected by the lock bit can be modified even when the lock is set.

Esempi osservati

Riferimenti Descrizione

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].

Potential Mitigations

Phases : Architecture and Design // Implementation // Testing

Detection Methods

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.
Effectiveness : High

Note sulla mappatura delle vulnerabilità

Giustificazione : 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.
Commento : 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.

Pattern di attacco correlati

CAPEC-ID Nome del pattern di attacco
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

Riferimenti

REF-1237

Intel BIOS locking mechanism contains race condition that enables write protection bypass
CERT Coordination Center.
https://www.kb.cert.org/vuls/id/766164/

Invio

Nome Organizzazione Data Data di rilascio Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi Intel Corporation 2020-01-15 +00:00 2020-02-24 +00:00 4.0

Modifiche

Nome Organizzazione Data Commento
CWE Content Team MITRE 2020-08-20 +00:00 updated Related_Attack_Patterns
CWE Content Team MITRE 2021-03-15 +00:00 updated Maintenance_Notes
CWE Content Team MITRE 2021-10-28 +00:00 updated Demonstrative_Examples, Description, Detection_Factors, Maintenance_Notes, Name, Observed_Examples, Potential_Mitigations, References, Relationships, Weakness_Ordinalities
CWE Content Team MITRE 2022-04-28 +00:00 updated Related_Attack_Patterns, Relationships
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes
CWE Content Team MITRE 2025-04-03 +00:00 updated Demonstrative_Examples
CWE Content Team MITRE 2025-09-09 +00:00 updated Relationships
Le informazioni presentate su CVE Find provengono da diverse fonti di riferimento attentamente selezionate. I dati CVE sono forniti da MITRE Corporation e dal National Vulnerability Database (NVD). Il catalogo delle vulnerabilità sfruttate conosciute (KEV) proviene dalla Cybersecurity and Infrastructure Security Agency (CISA), mentre i punteggi EPSS provengono da FIRST.org. Inoltre, i dati relativi alle vulnerabilità software (CWE) e ai pattern di attacco comuni (CAPEC) sono mantenuti da MITRE Corporation, e le informazioni sulle configurazioni hardware e software (CPE) sono fornite da NVD.