CWE-1274
Improper Access Control for Volatile Memory Containing Boot Code
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: Improper Access Control for Volatile Memory Containing Boot Code
The product conducts a secure-boot process that transfers bootloader code from Non-Volatile Memory (NVM) into Volatile Memory (VM), but it does not have sufficient access control or other protections for the Volatile Memory.
一般情報
背景の詳細
導入モード
Architecture and Design : This weakness can be introduced during hardware architecture or design but can be identified later during testing.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 Integrity | Modify Memory, Execute Unauthorized Code or Commands, Gain Privileges or Assume Identity 注記：If the volatile-memory-region protections or access controls are insufficient to prevent modifications from an adversary or untrusted agent, the secure boot may be bypassed or replaced with the execution of an adversary's own code. | High |
観察された例
| 参考文献 | 説明 |
|---|---|
CVE-2019-2267 | Locked memory regions may be modified through other interfaces in a secure-boot-loader image due to improper access control. |
潜在的な緩和策
Phases : Architecture and DesignEnsure that the design of volatile-memory protections is enough to prevent modification from an adversary or untrusted code.
Phases : Testing
Test the volatile-memory protections to ensure they are safe from modification or untrusted code.
検出方法
Manual Analysis
Ensure the volatile memory is lockable or has locks. Ensure the volatile memory is locked for writes from untrusted agents or adversaries. Try modifying the volatile memory from an untrusted agent, and ensure these writes are dropped.有効性 : High
Manual Analysis
有効性 : Moderate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-456 | Infected Memory
An adversary inserts malicious logic into memory enabling them to achieve a negative impact. This logic is often hidden from the user of the system and works behind the scenes to achieve negative impacts. This pattern of attack focuses on systems already fielded and used in operation as opposed to systems that are still under development and part of the supply chain. |
| CAPEC-679 | Exploitation of Improperly Configured or Implemented Memory Protections
|
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 | 4.1 |
変更履歴
| 名前 | 組織 | 日付 | コメント |
|---|---|---|---|
| CWE Content Team | MITRE | updated Demonstrative_Examples, Description, Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Common_Consequences, Demonstrative_Examples, Description, Detection_Factors, Maintenance_Notes, Name, Observed_Examples, Potential_Mitigations, Relationships, Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Related_Attack_Patterns | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Detection_Factors | |
| CWE Content Team | MITRE | updated Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Common_Consequences, Description | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Description |
