CWE-1233
Security-Sensitive Hardware Controls with Missing Lock Bit Protection
2020-02-24
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特定のCWEの通知
特定のCWEの変更情報をいち早くお届けします。
名前: 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.
一般情報
背景の詳細
導入モード
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.
適用可能なプラットフォーム
言語
クラス： Not Language-Specific (Undetermined)オペレーティングシステム
クラス： Not OS-Specific (Undetermined)アーキテクチャ
クラス： Not Architecture-Specific (Undetermined)テクノロジー
クラス： Not Technology-Specific (Undetermined)一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Access Control | Modify Memory 注記：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. |
観察された例
| 参考文献 | 説明 |
|---|---|
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]. |
潜在的な緩和策
Phases : Architecture and Design // Implementation // Testing検出方法
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.有効性 : High
脆弱性マッピングノート
理由 : 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.コメント : 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.
関連する攻撃パターン
| CAPEC ID | 攻撃パターン名 |
|---|---|
| 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
|
参考文献
REF-1237
Intel BIOS locking mechanism contains race condition that enables write protection bypassCERT Coordination Center.
https://www.kb.cert.org/vuls/id/766164/
登録情報
| 名前 | 組織 | 日付 | リリース日 | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna, Narasimha Kumar V Mangipudi | Intel Corporation | 4.0 |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| 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 |
