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
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Naam: 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.

Algemene informatie

Introductiemodi

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.

Toepasselijke platforms

Taal

Class: Not Language-Specific (Undetermined)

Besturingssystemen

Class: Not OS-Specific (Undetermined)

Architecturen

Class: Not Architecture-Specific (Undetermined)

Technologieën

Class: Not Technology-Specific (Undetermined)

Veelvoorkomende gevolgen

Bereik Impact Waarschijnlijkheid
Access ControlModify Memory

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

Waargenomen voorbeelden

Referenties Beschrijving

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].

Mogelijke risicobeperkingen

Phases : Architecture and Design // Implementation // Testing

Detectiemethoden

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.
Effectiviteit : High

Notities kwetsbaarheidsmapping

Rechtvaardiging : 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.
Opmerking : 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.

Gerelateerde aanvalspatronen

CAPEC-ID Naam aanvalspatroon
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

Referenties

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/

Indiening

Naam Organisatie Datum Releasedatum 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

Wijzigingen

Naam Organisatie Datum Opmerking
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
De informatie die op CVE Find wordt gepresenteerd, is afkomstig van verschillende zorgvuldig geselecteerde referentiebronnen. CVE-gegevens worden geleverd door MITRE Corporation en de National Vulnerability Database (NVD). De Known Exploited Vulnerabilities (KEV)-catalogus is afkomstig van de Cybersecurity and Infrastructure Security Agency (CISA), terwijl EPSS-scores afkomstig zijn van FIRST.org. Daarnaast worden gegevens over softwarezwakheden (CWE) en veelvoorkomende aanvalspatronen (CAPEC) bijgehouden door MITRE Corporation, en informatie over hardware- en softwareconfiguraties (CPE) wordt geleverd door de NVD.