CWE-1231
Improper Prevention of Lock Bit Modification
2020-02-24
00h00 +00:00
00h00 +00:00
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: Improper Prevention of Lock Bit Modification
The product uses a trusted lock bit for restricting access to registers, address regions, or other resources, but the product does not prevent the value of the lock bit from being modified after it has been set.
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：Design or coding errors in the implementation of the lock bit protection feature may allow the lock bit to be modified or cleared by software after it has been set. Attackers might be able to unlock the system and features that the bit is intended to protect. Registers protected by tje lock bit can be modified even when the lock is set. | High |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-2017-6283 | chip reset clears critical read/write lock permissions for RSA function |
潜在的な緩和策
Phases : Architecture and Design // Implementation // Testing検出方法
Manual Analysis
Set the lock bit. Power cycle the device. Attempt to clear 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-680 | Exploitation of Improperly Controlled Registers
|
参考文献
REF-1350
reglk_wrapper.svhttps://github.com/HACK-EVENT/hackatdac21/blob/b9ecdf6068445d76d6bee692d163fededf7a9d9b/piton/design/chip/tile/ariane/src/reglk/reglk_wrapper.sv#L80C1-L80C48
REF-1351
fix cwe 1199 in reglkhttps://github.com/HACK-EVENT/hackatdac21/commit/5928add42895b57341ae8fc1f9b8351c35aed865#diff-1c2b09dd092a56e5fb2be431a3849e72ff489d2ae4f4a6bb9c0ea6b7d450135aR80
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 Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Demonstrative_Examples, Description, Detection_Factors, Name, Observed_Examples, Potential_Mitigations, 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, References | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Demonstrative_Examples, Description |
