CWE-1328
Security Version Number Mutable to Older Versions
2020-12-10
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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 Version Number Mutable to Older Versions
The security version number in the hardware product is mutable, resulting in the ability to downgrade (roll-back) the boot firmware to vulnerable code versions.
一般情報
背景の詳細
導入モード
Architecture and DesignImplementation : Such issues could be introduced during hardware architecture and design, and can be 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
名前： Security Hardware (Undetermined)クラス： Not Technology-Specific (Undetermined)
一般的な結果
| スコープ | 影響 | 可能性 |
|---|---|---|
| Confidentiality Integrity Authentication Authorization | Other, Alter Execution Logic, Unexpected State 注記：If the security version number is modifiable by an adversary, this allows attacks like downgrading to a previous version that contains vulnerabilities. Once downgraded to a previous version, an adversary can launch exploits on the SoC and thus compromise the security of the SoC. These downgrade attacks are also referred to as roll-back attacks. | High |
| Availability | Other, Alter Execution Logic, Unexpected State 注記：An adversary could prevent upgrades, casing a denial of service. |
潜在的な緩和策
Phases : Architecture and DesignThe security version number must be stored securely and persistently across power-on resets. When architecting the system, security version data should be designated for storage in registers that are either read-only or have access controls that prevent modification by an untrusted agent.
Phases : Implementation
During implementation and test, security version data should be demonstrated to be read-only and access controls should be validated.
検出方法
Automated Dynamic Analysis
Mutability of stored security version numbers and programming with older firmware images should be part of automated testing.有効性 : High
Architecture or Design Review
Anti-roll-back features should be reviewed as part of Architecture or Design review.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. |
登録情報
| 名前 | 組織 | 日付 | リリース日 | Version |
|---|---|---|---|---|
| Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna | Intel Corporation | 4.3 |
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 Demonstrative_Examples | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Applicable_Platforms | |
| CWE Content Team | MITRE | updated Relationships | |
| CWE Content Team | MITRE | updated Mapping_Notes | |
| CWE Content Team | MITRE | updated Weakness_Ordinalities | |
| CWE Content Team | MITRE | updated Background_Details, Common_Consequences, Description, Potential_Mitigations |
